Less optimistic stripping of duplicate commands.
Less optimistic stripping of duplicate commands.

Currently in the gl.xml file there is duplicated glGetPointerv() in GL
4.3 and also glProgramUniformMatrix4fvEXT() in
EXT_separate_shader_objects ES extension. It's thus needed to remove
duplicates also inside the subset itself.

eternalrain/flextGL,mosra/flextgl,mosra/flextgl,mosra/flextgl,ginkgo/flextGL,ginkgo/flextGL,ginkgo/flextGL