In preparation for an upcoming improvement.

Tested on x86_64-suse-linux, applied on the mainline.


2017-05-22  Eric Botcazou  <ebotcazou@adacore.com>

libada/
	* configure.ac: Add check for sys/capability.h header.
	(have_capability): New substitution.
	* configure: Regenerate.
	* Makefile.in (GNATLIBCFLAGS_FOR_C): Add @have_capability@.

-- 
Eric Botcazou