Release: Checking PyPI too soon with give the old version back.

* Waiting for 5 minutes is hopefully enough.

* Since this is running in a Buildbot, it doesn't matter much how
  fast the script completes.
Python3.4: Mark executing frames to raise errors when attempting to clear them.
Python3.4: The __qualname__ now needs to respect global statements made on class names too.

* For Python3.3 the __qualname__ is wrong.

* This may allow to pickle these classes even though declared in a local
  scope.

* Also added test that checks __qualname__ compatibility. For 3.2 there
  is AttributeError, for 3.3 it is static, and for 3.4 it is adapted
  to the final scope of the variable.
Standalone: Fix, was only checking for conflicting DLLs with --show-modules option on.

* At least on Fedora20 this caused also errors due to overwriting
  identical DLLs with no writable bit on them.

* Also whitelist another DLL loaded on Fedora20.
New hotfix release.
Merge branch 'hotfix/0.5.4.3'
Merge tag '0.5.4.3' into develop
Minor cleanups
Command line options cleanup

* Added 3.4 as supported Python version, it mostly works with the next
  release.

* New option group for backend compiler choice

* New option group for Windows specific stuff.

* Recommend clang 3.2 or higher
New pre-release.