[binutils-gdb] Remove regcache_xmalloc

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT 791199cc75fd294a4f5a228f83abdcbfb4c64c7e ***

Author: Tom Tromey <tom@tromey.com>
Branch: master
Commit: 791199cc75fd294a4f5a228f83abdcbfb4c64c7e

Remove regcache_xmalloc

This patch removes regcache_xmalloc in favor of plain "new".

gdb/ChangeLog
2017-09-25  Tom Tromey  <tom@tromey.com>

	* regcache.h (regcache_xmalloc): Don't declare.
	(regcache_raw_set_cached_value): Update comment.
	* regcache.c (regcache_xmalloc): Remove.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Use new.
	* jit.c (jit_frame_sniffer): Use new.
	* frame.c (frame_save_as_regcache): Use new.