JOHNE - Reduce the number of build targets from 4 down to 3
JOHNE - Configure 'glib' for 32-bit module names
JOHNE - Configure 'gdk-pixbuf' for 32-bit module names
JOHNE - Move 'api-version' stuff into local-paths.lib
JOHNE - Don't output any 'RDC' modules to our Release folder (which is only for files to be released)
JOHNE - Enable Streaming SIMD Extensions (SSE) for our Release targets
JOHNE - Ensure that 'targetsxs.h' gets #included for all pixbuf loader DLLs
JOHNE - Preliminary stuff for generating pkg-config files. Will probably get supplemented depending upon feedback from Todd