libsepol policycap names

[Chris PeBenito <pebenito@xxxxxxxx>]

I've been able to make SETools dynamically link to libsepol.  However, 
one challenge is with policycap names.  They're static libsepol, with 
nothing that exports them.  Can we either:

* export the sepol_polcap_getname() function, or
* move the polcap_names[] in polcaps.c into <sepol/policydb/polcaps.h> ?

Then I can avoid having to manually keep a polcap name list inside SETools.

--
Chris PeBenito