Do not install extension modules into sys.path
Use relative import for _imaging
Load extensions from PIL package
Use relative import for _imagingcms
Better import for _imagingft
Use relative import for _imaginggl
Use relative import for _imagingmath
Use relative import for _imagingtk
Use relative import for _imagingagg
Merge pull request #88 from cgohlke/patch-9

Install extension modules into the PIL package directory