Autotools: Make package building easier

 * Non silent builds and enabled maintainer
   mode makes package building easier.
 * Add a note in the README to tell people
   how to switch on silent mode when
   they build the package by them selves.
Update the change log for 1.1.1
1.1.1
Makefile: Fix a problem with make distcheck
Update the change log for 1.1.2
1.1.2
Update language files
Update the change log for 1.1.3
1.1.3
tilda.desktop: Fix deprecation errors
Update the change log for 1.1.4
1.1.4
Fix the changelog dates
1.1.5