Allow Uint16Arrays uploads for texture_half_float
Specify reading from missing attachments

readPixels/copyTexImage2D/copyTexSubImage2D should generate INVALID_OP when reading from a missing attachment.
Changed oes-texture-float-and-half-float-linear tests to allow failure during glGenerateMipmap. This addresses https://github.com/KhronosGroup/WebGL/issues/408 .
moved EXT_sRGB from draft to community approved
moved EXT_frag_depth to community approved
Add test for EXT_srgb.
Merge pull request #557 from pyalot/EXT_frag_depth-to-approved

moved EXT_frag_depth to community approved
gl_FragCoord.xy test

If no multisampling : gl_FragCoord.xy should always be exact  at the
center of the framebuffer pixel.
Pass :
Chrome 35.0.1916.153 m
37.0.2043.0 canary
Opera 22.0.1471.50
Firefox 29
Maxthon v4.3.2.1000

Fail :
IE11 11.0.9600.17126
Added comment

Added comment
Added newline

Added newline
Fixed indenting

Fixed indenting
Add var to fix javascript error in Firefox.
Added errorbound to check on pixel center

Added errorbound to check on pixel center.
Do you think it is needed ? I thought about it but decided not to add
the error bound because 0.5 is exact representable in binary (0.1). Even
if there is a gpu which does use an internal representation which can
not exactly represent 0.5 (dec) it should compute a representation which
is the closest it can get for both the fractional coordinate and for the
compiled literal. So the comparison should still succeed. Is there a
central place where I can post these kind of technical questions to
vendors ?
Merge pull request #589 from djg/fix-compressed-texture-s3tc-pixel-checks

Add var to fix javascript error in Firefox.
Merged https://github.com/KhronosGroup/WebGL/pull/589 to 1.0.1 and 1.0.3 suites.
Merge pull request #590 from kenrussell/var-declaration

Merged https://github.com/KhronosGroup/WebGL/pull/589 to 1.0.1 and 1.0.3...
Add ANGLE bug test for variables with "dx_".

Variables starting with "dx_" are treated specially in certain
versions of ANGLE, causing a link error in some shaders. The bug
only presents in Firefox, because of Chromium's variable hashing
scheme.
Merge pull request #591 from jamiemadill/angle-dx

Add ANGLE bug test for variables with "dx_".
Merge pull request #588 from TiborsHub/master

gl_FragCoord.xy test
Fleshed out specs for Transform Feedback Objects