Revert "busybox: fix build for x86 android"

This reverts commit ae51825d, no need for a separate configuration file. Instead, add syscall stubs like those for arm and mips.

Conflicts:
	include-full-x86/autoconf.h
	include-full-x86/usage_compressed.h
	include-minimal-x86/autoconf.h
	include-minimal-x86/usage_compressed.h
x86: Remove stubs and add actual syscalls to fix the build

Change-Id: I1028cebf9de240a2fbdcc5d36ef120bf26564fc9
Build with -fno-strict-aliasing

Change-Id: I4117a526cdc93c96a9b7102727f5b33542810990
Signed-off-by: Evan McClain <aeroevan@gmail.com>
x86: do not override system syscalls, like arm and mips

and adjust system compiler prefix with sed in Android.mk

Change-Id: Ic1bd17611abb74c0cfa963a5967b8c21166bcc08
Merge remote-tracking branch 'origin/jellybean' into jb-linaro