glapi: Reformat python code generation scripts to use 4-space indentation.
This brings us into accordance with the official Python style guide (http://www.python.org/dev/peps/pep-0008/#indentation). To preserve the indentation of the c code that is generated by these scripts, I've avoided re-indenting triple-quoted strings (unless those strings appear to be docstrings). Acked-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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