glsl: Reject shader versions not supported by the implementation

glsl: Reject shader versions not supported by the implementation

Previously we'd happily compile GLSL 1.30 shaders on any driver.  We'd
also happily compile GLSL 1.10 and 1.20 shaders in an ES2 context.
This has been a long standing FINISHME in the compiler.

NOTE: This is a candidate for the 7.9 and 7.10 branches