Install PROTOCOL with documentation as well
configure.ac cleanup

1. Remove unneeded block in capability check.
2. Reorder --with flags in alphabetical order.
Add mhash dependency to the Debian build

Adler32 implementation in mhash is ~7 times faster than inline
implementation in clsync.
Add capabilities to the travis test.
travis should install libcap-dev
Speed up travis test

Remove empty args check except for no args at all
Update TODO
Updated Gentoo ebuild

Sync from my overlay:
- add v0.1 release;
- support capabilities;
- provide init script and conf.d file;
- add usage hint messages.
Fixed bug with wrong state_p unlock: https://github.com/xaionaro/clsync/issues/7
LICENSE file was out of date. It's "GPLv3+" now, not "GPLv3".
Force 0700 on /etc/clsync in Gentoo
Update license in the ebuild.
Update conf.d in the ebuild.
options "--initialsync-enable" and "--synclist-simplify" added
Merge branch 'master' of https://github.com/xaionaro/clsync
Fixing https://github.com/xaionaro/clsync/issues/12
manpage fix for "--initialsync-enable"
fix of commit https://github.com/xaionaro/clsync/commit/1b8362ad288524053829207c3807faef9fffe1d2
Fix of https://github.com/xaionaro/clsync/issues/15
fix of fix https://github.com/xaionaro/clsync/commit/fad9014ae92eb3efd909c52474be96faa9ddec55 and valgrind-ed