add FAQ to distribition; make compatible with gcc-2.95

add FAQ to distribition; make compatible with gcc-2.95

* Add FAQ to EXTRA_DIST in root.

* Name the anonymous union inside struct mod_chanmode.

* Typecast printf() field width arguments to int.
git-archimport-id: srvx@srvx.net--2004-srvx/srvx--devo--1.3--patch-72