grim/guifications3

implement the preference uri command line and environment variable handling. This hasn't been tested yet, unit tests to come soon.

refs #69
prefix=@prefix@
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
Name: gflib#
Description: gflib# - Guifications Library .NET Bindings
Version: @VERSION@
Libs: -r:${libdir}/mono/gflib-sharp/gflib-sharp.dll