ARM: compile everything with relro / bind_now.

Enable relro / bind_now when compiling Android applications.
This marks certain regions of memory as read-only after linking,
making memory corruption security vulnerabilities are harder
to exploit.

 * (section 6)

Stop using the custom linker script, which inhibits
relro / bind_now support.

Change-Id: Iaebfbbb492299004f9da92b649985b6cd67d8c97
4 files changed