- BR: acl-devel for mod_facl, moved from core to DSO,

- BR: acl-devel for mod_facl, moved from core to DSO,
- moved auth_file and ident from core to DSO (enabled by default), other
  modules are either unshareable or won't build this way (ctrls, log, site, delay, facts),
- build ifsession and lang DSOs, no extra deps so included in common subpackage,
- BR: libcap-devel for mod_cap,
- rewritten conf.d/*.conf files generation, create them in loop,
- use libexecdir in paths, release 4

Changed files:
    proftpd.spec -> 1.265