Merge branch 'release/sys-kernel/geek-sources-3.11.4' into develop
Fix all eclass. Try {rsync,tar} instead of cp.

Test:
    time USE="aufs brand exfat fedora ice mageia reiser4 symlink" emerge =sys-kernel/geek-sources-3.11.4

Results:
For my old "cp" and "rsync" (almost the same as "cp"):

real	24m49.306s
user	10m41.624s
sys	3m11.646s

New  "(cd /src; tar cf - .) | (cd /dst; tar xpf -)":

real	16m11.062s
user	7m16.631s
sys	2m41.938s

So now use "(cd /src; tar cf - .) | (cd /dst; tar xpf -)" instead of "cp"
Bump sys-kernel/geek-sources-3.12-r3 -> sys-kernel/geek-sources-3.12-r4
Mask sys-kernel/geek-sources-3.12-r4
Merge branch 'release/sys-kernel/geek-sources-3.12-r4'