bugfix! better filter for arm asm function names

filter out things like:
	some_func-0x1234:
and:
	somefunc@plt
and:
	.plt:

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
allow wrapping of libraries other than libc

fixes include:
	* force ARM compilation of entire library
	* remove implicit dependencies on libc/libgcc functions
	  such as __cxa_finalize()
	* put stubs for raise(), abort(), memcpy() that are used by
	  libgcc.a
	* refactor the wrapper script Android.mk generation to be
	  more amenable to alternate Makefiles
	* make sure --wrap-all actually wraps all functions, and
	  doesn't just pass them through

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>