Merge pull request #9 from jgmdev/premake

Added system availability check for libjpeg.
Merge pull request #10 from jgmdev/premake

Addition of third party libraries
Merge pull request #11 from jgmdev/premake

Now forcing of builtin libraries is possible for testing.
wxRibbon library script (draft).
Merge branch 'premake' of github.com:redtide/wxWidgets into premake
Small changes.
Merge branch 'premake' of https://github.com/redtide/wxWidgets into premake
Merge pull request #12 from jgmdev/premake

Fixed tiff compilation error and wx.print.
Merge branch 'premake' of https://github.com/redtide/wxWidgets into premake
Simplified check of third party libraries with a generic function.
Enabled expat and regex libraries.