- Make LALgetopt.h a public header, add LALgetopt() and LALgetopt_long_only()
- Remove getopt* sources from LALApps
- Point all LALSuite codes to LALget(), LALgetopt_long(), etc.
- Remove #include <getopt.h>
- Remove #include <unistd.h> if not needed; if needed, check for it using
  AC_CHECK_HEADERS(), #include <config.h> and use #if HAVE_UNISTD_H
- Refs #1932
Original: 117a25af61111e8692b99a3dc0b27e82afc24436