EFL stack bumped to version 1.7.5
Merge pull request #4 from Ratler/1.7.5

 EFL stack bumped to version 1.7.5
evas_generic_loaders: New module for generic image support
evas: Added optional dependecy for evas_generic_loaders

Also removed direct dependecy for librsvg since it isn't
valid anymore.
Merge pull request #5 from Ratler/evas_generic

Added support for evas generic loaders