Merge pull request #415 from hean01/master

Fixes crash when trying to load EXR files with other channels then RGB(A).
colormatrices: enhanced matrix for sony a77v (thanks to Wolfgang Kuehnel)
(cherry picked from commit 10561305608b7fb227912bb3b370a41b673e5251)
colormatrices: minor whitespace cleanup
(cherry picked from commit 473e3466dd85be4539862b9db1e02533c5246809)
masks: make removal of gui forms more bullet proof (should fix #9762)

still needs to be found out if there is a deeper lying root cause
Merge pull request #416 from hean01/master

Fix broken logic.
rawspeed: preliminary fix for #9752

I received this fix from Klaus Post
(cherry picked from commit bbbe081c1ced5d9426793e0b1ddf8060a2ab849d)
Merge pull request #417 from hean01/master

Make sure that we respect dataWindow and displayWindow.
Merge pull request #418 from hean01/master

Add support for 32bit float TIFF export.
Make sure to clear the mipmap buffer before use.