Remove empty line at the end of configure.in
Rename configure.in to configure.ac

Thanks to Hendrik Jaeger (a.k.a. henk).
Removed ltmain.sh script, which is part of libtool

It wasn't used anymore.

Thanks to Hendrik Jaeger (a.k.a.  henk).
Specify Keywords entry in desktop file
Fix minuses vs. hyphens in the man page
Install Vim plugin to share/ on make install

Thanks Svyatoslav Mishyn (a.k.a. juef).
Merge branch 'packaging-improvements'

Several packaging/maintenance updates mainly from Debian packager
feedback (henk).