POCL: version 0.10.

- add support for LLVM 3.5
- LLVM 3.4 must be used if CLT < 6.0
- run full test suite.

Fixes #1525.

Closes #1535.

Signed-off-by: Dominique Orban <dominique.orban@gmail.com>
pocl: add 0.10 bottle.
Paraview: Fix cast issue related to FreeType.

Fixes #1486.
paraview: add 4.2.0 bottle.