Fix st with input method.

XFilterEvent need to be called against every event, otherwise it would
missing some message in the xim protocol and misbehave on some im server.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Very minor grammar fixes in FAQ

Self-explanatory.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Add information about librt and OpenBSD to the FAQ
Add information about librt and OpenBSD to the FAQ
Merge branch 'master' of http://git.suckless.org/st