bump(dev-lang/python): Sync with upstream python-2.7.5-r4

Copy of upstream 2.7.5-r4 + cross compile tweaks/fixes from our -r2
Dropped some sed hackery related to ChromiumOS's /usr/local weirdness.
I am hoping that issue18851.patch fixes some intermittent build issues.
fix(sys-kernel/coreos-kernel): Fix initramfs in /usr builds.

Properly handle when /lib in bootengine is a symlink to /usr/lib64 in
addition to the /lib64. mv needs /usr to exist first :)
Merge pull request #296 from gregkh/kernel_update

feat(sys-kernel/coreos-kernel) enable CIFS module
Merge pull request #298 from marineam/kernel

fix(sys-kernel/coreos-kernel): Fix initramfs in /usr builds.
Merge pull request #297 from marineam/python

bump(dev-lang/python): Sync with upstream python-2.7.5-r4
fix(sys-kernel/coreos-kernel): Fix initrd in non-usr images.

My fix for /usr broke the normal images because my bash hacking was
overly simplistic. Use dirname to ensure the right thing happens.
Merge pull request #299 from marineam/fix-boot

fix(sys-kernel/coreos-kernel): Fix initrd in non-usr images.
feat(app-emulation/docker): bump to docker-0.7.5
Merge pull request #300 from philips/docker-0.7.5

feat(app-emulation/docker): bump to docker-0.7.5
bump(bootengine): Update to fix PXE and /usr booting.
Merge pull request #301 from marineam/squashfs

bump(bootengine): Update to fix PXE and /usr booting.
feat(coreos-base/coreos-init): add symlink-usr flag support

Via https://github.com/coreos/init/pull/34
Merge pull request #302 from philips/usr-init

feat(coreos-base/coreos-init): add symlink-usr flag support
usr(gmerge): install to /usr
remove docs
Merge pull request #303 from polvi/fix-gmerge

usr(gmerge): install to /usr
usr(gmerge): use regular /etc/ instead of /usr/local
usr(init): bump to latest
fix 9999 ebuild
Merge pull request #304 from polvi/fix-gmerge2

usr(gmerge): use regular /etc/ instead of /usr/local