Multiple changes

- Removed MinSampleShading from the limit queries.
- Added NumericQueries to ClientContext.
Multiple changes

- Added the EnumAssocGLType metafunction.
- Added specializations of EnumAssocType for LimitQuery.
- Updated context::LimitQueries.
- Other minor changes.
Added LimitQueries to ClientContext
Merge branch 'develop' into develop-with-eagine

Conflicts:
	implement/oglplus/detail/smart_enums.ipp
	implement/oglplus/detail/smart_values.ipp
	implement/oglplus/enums/limit_query_names.ipp
	include/oglplus/enumerations.hpp