package/libsemanage: now available on !glibc configs

package/libsemanage: now available on !glibc configs

libsemanage was only available in glibc configurations, for three
reasons, which are all no longer true:

 - The usage of fts.h by libselinux is now provided by the musl-fts
   package when uClibc-ng or musl are used, which makes libselinux
   available to all C libraries.

 - libsemanage use of getpwent_r() has been removed by upstream commit
   2c651e0a2822368c74587efe6ec920e64e72f37b ("genhomedircon: avoid use
   of non-standard `getpwent_r`"), which is in SELinux since version
   2.7

 - audit is now available on musl, thanks to Buildroot commit
   "package/audit: re-enable on musl", which backports an upstream
   patch to make audit build with musl

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>