./bootstrap-prefix.sh /opt/tmp stage1
./bootstrap-prefix.sh /opt stage2

./bootstrap-prefix.sh /opt stage3

# Compare two numbers as fractional parts of a decimal fraction.
function comm_float() {
        local f1="$1" f2="$2" i d1 d2
        for ((i=0;i<${#f1}||i<${#f2};++i)); do
                d1=${f1:$i:1}; [[ "$d1" ]] || d1=0
                d2=${f2:$i:1}; [[ "$d2" ]] || d2=0
                ((d1<d2)) && return -7; ((d1>d2)) && return 7
        done
        return 0
}

# Compare version specifiers s1, s2. Returns <0, 0, >0 if s1 is resp lower, 
# equal, higher than s2. Note that <0 actually means >127 (-1 -> 255, etc)
# 0: equal; 1: differ in erev; 2: differ in status number; 3: differ in status;
# 4: differ in letter; 5: differ in mmm length; 6: differ in mmm
#
# This needs to be kept equivalent to portage_versions.vercmp().
#
# NOTE: Portage considers e.g. 7.0 and 7.0.0 to be equivalent. Yes, I know, 
# this sucks. HATE HATE HATE
#
# status code number: alpha->0, beta->1, pre->2, rc->3, (none)->4, p->5
function comm_ver() {
        local s1_mlsr="$1" s2_mlsr="$2"
        [[ "$s1_mlsr" == "$s2_mlsr" ]] && return 0
        if [[ "$s1_mlsr" == */* || "$s2_mlsr" == */* ]]; then
                echo "Oops: comm_ver called with category/package: $s1_mlsr $s2_mlsr" | format_error >&2
                backtrace
                return 0
        fi
        s1_mls="${s1_mlsr/%-r+([[:digit:]])}"; s1_r="${s1_mlsr#${s1_mls}}"
        s1_r="${s1_r/#-r*(0)}"
        s1_ml="${s1_mls%%*(_@(alpha|beta|pre|rc|p)*([[:digit:]]))}"
        s1_ss="${s1_mls#${s1_ml}}"
        s1_m="${s1_ml/%[[:lower:]]}"; s1_l="${s1_ml#${s1_m}}"; s1_m=( ${s1_m//./ } )
        s2_mls="${s2_mlsr/%-r+([[:digit:]])}"; s2_r="${s2_mlsr#${s2_mls}}"
        s2_r="${s2_r/#-r*(0)}"
        s2_ml="${s2_mls%%*(_@(alpha|beta|pre|rc|p)*([[:digit:]]))}"
        s2_ss="${s2_mls#${s2_ml}}"
        s2_m="${s2_ml/%[[:lower:]]}"; s2_l="${s2_ml#${s2_m}}"; s2_m=( ${s2_m//./ } )
        local i
        for ((i=0; i<${#s1_m[@]} || i<${#s2_m[@]}; ++i)); do
                s1mi="${s1_m[$i]}"; s2mi="${s2_m[$i]}"
                [[ "$s1mi" || "$s2mi" == '0' ]] || return -5
                [[ "$s2mi" || "$s1mi" == '0' ]] || return 5
                if [[ "$s1mi" == 0* || "$s2mi" == 0* ]]; then
                        comm_float "$s1mi" "$s2mi"; ret=$?; ((ret)) && return $ret
                else
                        ((s1mi < s2mi)) && return -6
                        ((s1mi > s2mi)) && return 6
                fi
        done
        ((${#s1_m[@]}!=${#s2_m[@]})) && [[ "${s1_l}${s1_s}${s1_r}" == "${s2_l}${s2_s}${s2_r}" ]] && return 0
        [[ "$s1_l" < "$s2_l" ]] && return -4
        [[ "$s1_l" > "$s2_l" ]] && return 4
        s1_ss=( ${s1_ss//_/ } ); s2_ss=( ${s2_ss//_/ } )
        for ((i=0; i<${#s1_ss[@]} || i<${#s2_ss[@]}; ++i)); do
                s1si="${s1_ss[$i]}"; s2si="${s2_ss[$i]}"
                s1sci="${s1si/%*([[:digit:]])}"; s2sci="${s2si/%*([[:digit:]])}"
                s1_scn="$((6-${#s1sci}))"; [[ $s1_scn -ge 4 ]] && s1_scn=$((10-$s1_scn))
                s2_scn="$((6-${#s2sci}))"; [[ $s2_scn -ge 4 ]] && s2_scn=$((10-$s2_scn))
                [[ "$s1_scn" < "$s2_scn" ]] && return -3
                [[ "$s1_scn" > "$s2_scn" ]] && return 3
                s1_sn="${s1si##${s1sci}*(0)}"
                s2_sn="${s2si##${s2sci}*(0)}"
                [[ "$s1_sn" -lt "$s2_sn" ]] && return -2
                [[ "$s1_sn" -gt "$s2_sn" ]] && return 2
        done
        [[ "${s1_r}" -lt "${s2_r}" ]] && return -1
        [[ "${s1_r}" -gt "${s2_r}" ]] && return 1
        echo "Error! comm_ver failed $1 $2" >&2
        exit 128        # should not reach here
}

function vercmp() {
	comm_ver "$1" "$3"
	case "$2" in
		"=" ) (( $? == 0 ));;
		"~" ) (( $? == 255 || $? == 0 || $? == 1 ));;
		"<=" ) (( $? == 0 || $? >= 128 ));;
		"<" ) (( $? >= 128 ));;
		">=" ) (( $? < 128 ));;
		">" ) (( $? > 0 && $? < 128 ));;
		* ) format_error <<<"Unrecognised version comparator: $2" >&2
	esac
}

> cd /usr/lib64/portage
> patch -p1 < emerg.resolv.time_print.patch
> emerge --update --newuse --deep @world @system -pv

These are the packages that would be merged, in reverse order:

2013-10-28 15:44:11: Calculating dependencies /
2013-10-28 15:44:41: Adding root packages /
2013-10-28 15:44:51: Processing dependencies -
2013-10-28 15:45:46: Checking for slot conflicts  
2013-10-28 15:45:46: Trying to accept blocker conflicts   
2013-10-28 15:45:46: Resolving slot conflicts for complete graph  \
2013-10-28 15:45:46: Processing slot conflicts   
2013-10-28 15:45:46: Triggering slot operator reinstalls   
2013-10-28 15:45:59: Validating blockers  /
2013-10-28 15:46:01: Checking for blocker conflicts  
2013-10-28 15:46:01: Checking for rebuild triggers  
2013-10-28 15:46:01: Checking if restart is needed  
2013-10-28 15:46:01: Checking if we have to prune rebuilds  
2013-10-28 15:46:01: Checking if restart is needed  
2013-10-28 15:46:01: Checking for parameters that change behavior  
2013-10-28 15:46:01: Checking for changes that are needed  
2013-10-28 15:46:01: Done resolving!... done!

> wget http://abf-downloads.rosalinux.ru/kernels_38x_personal/repository/cooker/SRPMS/main/release/kernel-3.8.12-69.src.rpm
(cut)
2013-05-13 11:26:05 (484 KB/s) - «kernel-3.8.12-69.src.rpm» сохранён [73813940/73813940]

> md5sum kernel-3.8.12-69.src.rpm
44c9869de1cc41fd94f4629062308fa0  kernel-3.8.12-69.src.rpm

> rpm2tarbz2 kernel-3.8.12-69.src.rpm

> tar -xjpf kernel-3.8.12-69.src.tar.bz2

> ls -1
cpupower.config
cpupower.service
disable-mrproper-prepare-scripts-configs-in-devel-rpms.patch
kernel-3.8.12-69.spec
kernel-3.8.12-69.src.rpm
kernel-3.8.12-69.src.tar.bz2
kernel.rpmlintrc
linux-3.8.12-rosa69.tar.xz
linux-3.8.tar.sign
linux-3.8.tar.xz
patch-3.8.12.bz2
patch-3.8.12.sign
README.kernel-sources

> tar xf linux-3.8.12-rosa69.tar.xz

> cd 3.8.12-rosa69/

> find * | egrep "info|patch_list"
queue/bfq/info
queue/bfq/patch_list
queue/uksm/patch_list
queue/aufs/info
queue/aufs/patch_list
queue/ice/patch_list

> cat queue/bfq/info
 Generated by patch_maker.sh script v-0.5
 Grabbed on 2013-03-04 12:03:37 EET
 From: http://algo.ing.unimo.it/people/paolo/disk_sched/patches/3.8.0-v6
> cat queue/aufs/info
 Generated by patch_maker.sh script v-0.5
 Grabbed on 2013-05-04 08:59:11 EEST
 url: 
 local branch: remotes/origin/aufs3.8
 tracking branch: 
 tracking remote: 

cat /proc/sys/kernel/pax/softmode 
1

[ 1531.531486] sd 6:0:0:0: [sdb] 15625216 512-byte logical blocks: (8.00 GB/7.45 GiB)
[ 1531.533240] sd 6:0:0:0: [sdb] Write Protect is off
[ 1531.533252] sd 6:0:0:0: [sdb] Mode Sense: 03 00 00 00
[ 1531.534498] sd 6:0:0:0: [sdb] No Caching mode page present
[ 1531.534508] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1531.538362] sd 6:0:0:0: [sdb] No Caching mode page present
[ 1531.538371] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1531.542900]  sdb: sdb1
[ 1531.546585] sd 6:0:0:0: [sdb] No Caching mode page present
[ 1531.546591] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1531.546596] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[ 1542.824024] enlightenment_f[525]: segfault at 29 ip 00007f1171134798 sp 00007fff29b88ba0 error 4 in libdbus-1.so.3.7.3[7f117110a000+46000]
[ 1542.824052] grsec: Segmentation fault occurred at 0000000000000029 in /usr/lib64/enlightenment/utils/enlightenment_fm[enlightenment_f:525] uid/euid:1000/1000 gid/egid:1000/1000, parent /usr/bin/enlightenment[enlightenment:478] uid/euid:1000/1000 gid/egid:1000/1000