MakeSTB Sprite Table Utility

2013-09-07:
* Create STB files from CSV or XML
* Read and write a tabular text format
- Resembles BZ2's sprite.txt minus the TW and TH fields
- Skips blank lines and lines starting with #
- Supports @include directive

2013-09-02:
* Added (very preliminary) MakeSTB utility
- Read STB, output tabular listing, CSV, XML, or JSON
