Update flags with memory optimizations

Credit to AOSPAL

Change-Id: Iad7a19fc7d25c2bb2b8bd82efdf368bc0e1de02a
Update flags with configurable strict aliasing

Change-Id: I3145c766c597016cfe7f1ce903cf7b3f5fb75fa8
Update flags with configurable suppress-unused-warning

Change-Id: If3771db6d99a5d623d4424f3972d720d5ca948c8
Dump SUPPRES_UNUSED_WARNING, STRICT_ALIASING and OPT_MEMORY

Change-Id: I67bcc98f6e60b84e0f81fb3fea51d818bbb190d5

Conflicts:
	core/dumpvar.mk