Zap some warnings in target files:
* frame.c: Include stdlib.h and unistd.h to possibly get various
function prototypes. The fixproto script guarantees these header
files exist on the target system.
* libgcc2.c: Likewise.
* gthr-single.h (__gthread_mutex_lock, __gthread_mutex_trylock,
__gthread_mutex_unlock): Add __attribute__ ((__unused__)) to the
function parameters.
* libgcc2.c (__udiv_w_sdiv): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19261
138bc75d-0d04-0410-961f-
82ee72b054a4