Add union support for clang.
Add a union to the cproj test project.
Add union support to cythongen.py (and fix C struct support).
Add a union to the cppproj test project.
Merge branch 'master' into feature/union-support
Get unions working with pycparser
Add union support for gccxml.
Fix a bug in basics.[ch] that was making gccxml unhappy.

(The array was declared as one byte short of the string which was
being assigned to it)
Merge branch 'feature/union-support' of github.com:xdress/xdress into feature/union-support
Merge branch 'master' into feature/union-support
Add a note in the documentation about unions.
Merge branch 'feature/union-support'