This patch removes the use of the "register" keyword from the bsearch() and bsearch_r() functions supplied by libiberty.  The register keyword is deprecated in C++17.

2020-06-25  Nick Clifton  <nickc@redhat.com>

include/
	* libiberty.h (bsearch_r): Remove use of the register keyword from
	the prototype.

libiberty/
	* bsearch.c (bsearch): Remove use of register keyword.
	* bsearch_r.c (bsearch_r): Likewise.