Revert "Apply strict SELinux checking of PROT_EXEC on mmap/mprotect calls."

This reverts commit 0ad86b4ec9818a2665d06d97039702bc266ca386.
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_system_core into kitkat
Merge remote-tracking branch 'PA/kitkat' into kitkat-legacy