Fix crash when running VolumeUpdate test

Change-Id: Ief6b7556ae79a8fe6c8ef400d099b6a4def81343
Merge topic 'volume_update_test' into master

740f0188 Fix crash when running VolumeUpdate test
Add in support for OpenGL ES 3.0

Make the build process use the opengl ES 3.0 header files if
selected and modify the backend to enable more features when
using ES 3.0. VAOs, FBOs, and instanced draw calls are enabled.

There are still some changes to be made for textures probably and
as with ES 2.0 only some modules have been tested/converted.

Change-Id: If244dc5bc9295a86f98b032b3a21995336a8fb05
Merge topic 'opengles3' into master

8aef7c2b Add in support for OpenGL ES 3.0
hdf5: check for the right policy

Change-Id: I04ffba759412a4e3877b8278d499a03f0a219199
Merge topic 'fix-hdf5-cmake' into master

ca540cb3 hdf5: check for the right policy