Update release information files.
* Combined AUTHORS and CONTRIBUTORS.
* Added some more folks to the AUTHORS file based on commit history.
* Added Makefile recipe to dynamically generate ChangeLog from last annotated tag or a specified ref.
* Added ignores for tarballs and ChangeLog.
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: libloudmouth
Description: libloudmouth
Requires: glib-2.0
Version: @VERSION@
Libs: -L${libdir} -lloudmouth-1 @LIBIDN_LIBS@
Cflags: -I${includedir}/loudmouth-1.0