additional check to make sure that vertexAttribPointer isn't called for not active attribute (case when getAttribLocation returns -1)
Add a 1 channel jpg texture test.

This passes on Chrome and Firefox but generates an incorrect
`INVALID_VALUE` error on Safari
Merge pull request #451 from imzet/utils-vbo-use

additional check to make sure that vertexAttribPointer isn't called for ...
Merge pull request #457 from greggman/add-1-channel-jpg

Add a 1 channel jpg texture test.
Fix up WEBGL_debug_shaders test.

getTranslatedShaderSource() should return "" instead of null on failure.
Fixed JS error where newTranslatedSource was not forward-declared.
Merge pull request #458 from jdashg/debug_shaders

Fix up WEBGL_debug_shaders test.
Clarify that conformance test 'version'.

Switched out 'Version <version>' with 'Subset: Version <version>' to
clarify that it only changes the subset of tests, not the actual versions
of the tests run.
Merge pull request #460 from jdashg/version-reword

Clarify that conformance test 'version'.
Add link to previous conf test dir.
Merge pull request #461 from jdashg/version-reword

Add link to previous conf test dir.
Add a test for texture2DProjLod.
Merge pull request #456 from c0d1f1ed/texture2DProjLod

Add a test for texture2DProjLod.