Extract test for huge arrays into separate tests.
Review feedback
Restructured oes-element-index-uint.html to act as a regression test for a bug in ANGLE which has since been fixed.

The component tests under conformance/buffers/ were unaffected by this bug, so not modifying them.

Bug: https://github.com/KhronosGroup/WebGL/issues/328
Merge pull request #332 from kenrussell/dynamic-draw

Restructured oes-element-index-uint.html to act as a regression test for...
Fixed bug pointed out by Lane Roberts at Samsung where webgl-shared-resources.html was timing out when the extension was not supported.
Merge pull request #333 from kenrussell/shared-resources

Fixed bug pointed out by Lane Roberts at Samsung where webgl-shared-reso...
Undo changes to 1.0.2 version
All extensions are disabled when the WebGLRendering context is lost, with
the exception of WEBGL_lose_context. Include this in the section on
extensions, as well as the steps to perform in the case of a lost context.

Also update the WEBGL_lose_context extension spec to point out that
it is an exception to the rule.
Merge pull request #327 from dslomov-chromium/huge-array-tests

Extract test for huge arrays into separate tests.
Disabled extensions mark any WebGLObject instances they create as
invalid. Calling any method on a disabled extension generates
a INVALID_OPERATION error.
Merge pull request #334 from grorg/extensions-disconnected

Clarify the behavior of extensions if the WebGL rendering context is lost.
Fixed typo in WEBGL_lose_context revision history mentioned on public_webgl.
Merge pull request #335 from kenrussell/typo

Fixed typo in WEBGL_lose_context revision history mentioned on public_we...
Remove generated files

Many of the files in extensions are generated, and thus
do not need to be in the repository. The Khronos web site
picks up changes to the repository and generates the content
automatically.
Merge pull request #336 from grorg/repository-cleanup

Remove generated files
Move three extensions to community approved.

Based on consensus on the public-webgl list, the following three
extensions are advanced to community approved:
- ANGLE_instanced_arrays
- OES_texture_float_linear
- OES_texture_half_float_linear
Merge pull request #337 from grorg/community-approval

Move ANGLE_instanced_arrays, OES_texture_float_linear and OES_texture_half_float_linear extensions to community approved.