Hide GLSL in default documentation.
Document parameters and return values for GLSL functions.
Merge pull request #594 from AnalyticalGraphicsInc/issue484

Hide GLSL in default documentation.
Prevent suites with matching prefixes from running when a suite is in
focus.
Merge branch 'master' into issue514
Merge pull request #595 from AnalyticalGraphicsInc/issue459

Document parameters and return values for GLSL functions.
Merge pull request #596 from AnalyticalGraphicsInc/issue514

Prevent test suites with prefixes matching a selected suite from running.