Added outputFile option to yafaray-xml
Merge pull request #11 from rubdos/outputfile

Added outputFile option to yafaray-xml
Review code from 'rubdos' patch:
    - set only the file name, the extension is set with parsing 'f' option
Merge branch 'master' into gridvolume_update
Use 'format code' from MSVC IDE for better indentation.
Delete commented and unused code.