* libc/include/sys/signal.h [__SPU__] (kill): Declare.
* libc/include/stdlib.h (__bsd_qsort_r): Declare.
(qsort_r): Declare.
* libc/search/Makefile.am (ELIX_2_SOURCES): Rename from ELIX_SOURCES.
(ELIX_4_SOURCES): Define.  Add bsd_qsort_r.c and qsort_r.c.
(libsearch_la_SOURCES): Adapt accordingly.
(lib_a_SOURCES): Adapt accordingly.
(CHEWOUT_FILES): Add qsort_r.def.
* libc/search/Makefile.in: Regenerate.
* libc/search/bsd_qsort_r.c: New file.
* libc/search/qsort.c: Update from FreeBSD HEAD. Adapt for both BSD
and GNU qsort_r flavors.
* libc/search/qsort_r.c: New file.
	* libc/time/gmtime_r.c (gmtime_r): Fixed bug in calculations for dates
	after year 2069 or before year 1901. Ideas for solution taken from
	musl's __secs_to_tm()
	* libc/machine/aarch64/strrchr.S: New file.
	* libc/machine/aarch64/strrchr-stub.c: New file.
	* libc/machine/aarch64/Makefile.am: Add them to build list.
	* libc/machine/aarch64/Makefile.in: Regenerated.
Merge remote-tracking branch 'origin/master'