Remove libtool parts from autogen.sh
Renema configure.{in,ac} in autogen.sh
Add more desktop-file category (Utility)
Associate inode/directory mimetype in vifm.desktop
Fix some words in ChangeLog
Fix check for directory on OS X

Thanks to Daniel R., a.k.a. reicheltd.

Fixes #53.
Merge branch 'infrastructure-updates'

Some unrelated small updates here and there.