fix(coreos-base/cros_boot_mode): Fix building with GCC 4.6

Swap -fstack-protector-strong for -fstack-protector-all
fix(coreos-base/libchrome): Fix building with sysroot-wrappers

Tell the scons build to pass the PATH environment variable through.
fix(coreos-base/libchromeos): Fix building with sysroot-wrappers

Tell the scons build to pass the PATH environment variable through.
fix(coreos-base/update_engine): Fix building with sysroot-wrappers

Tell the scons build to pass the PATH environment variable through.
fix(sys-apps/bootcache): Fix building with GCC 4.6

Swap -fstack-protector-strong for -fstack-protector-all
fix(coreos-base/hard-host-depends): Include sysroot-wrappers in SDK
Merge pull request #88 from marineam/compile-fixes

Compile fixes for new toolchain
fix(profiles): Add sysroot-wrappers to PATH

We need to add sysroot-wrappers to PATH in portage itself because
commands like "sudo emerge ..." reset PATH to a fairly bland default.
emerge has similar logic for ccache and distcc internally.
Merge pull request #89 from gregkh/boot_kernel_update

fix(coreos-base/bootengine) update 9999 ebuild so that cros_workon works
Merge pull request #90 from marineam/sysroot

fix(profiles): Add sysroot-wrappers to PATH
fix(eclass/cros-board): remove all the boards

remove all of the unused boards.

bye mario, itsa not you.
Merge pull request #91 from philips/cleanup-boards

fix(eclass/cros-board): remove all the boards