fix misplaced or missing "e" in words with "ment" ending (argument, implement,
increment, decrement, alignment), in comments, documentation, log messages.

fix rump

fix weak symbols. More work needs to be done for memcpy/strlen etc.

No need to include namespace.h; no other assembly code does.

Switch to unified syntax
use RET/RETc
use push/pop

Fix a typo in strlcpy which caused to not deal with NULs predecing the
string properly.

Rename strlen.S and strcpy.S to strlen_arm.S and strcpy_arm.S