Preserve optionality of libcap by having configuration script follow the
HAVE_CAP environment variable, used similarly to the HAVE_ELF variable.
Signed-off-by: Alin Nastac <alin.nastac@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase/refresh patches]
(backported from commit a6da3f9ef746101b84a6f530f5a40de28341b69a)
Signed-off-by: Jo-Philipp Wich <jo@mein.io>