Documentation updates folded back from 0.4.4 branch
Fixed scipy with updates to scipy_core packaging.
Fixed overwrite specification.
Added more names to THANKS.txt
simple change to test the cvs_version script.
added Dave to the THANKS list for testing.
added Louis Luangkesom for stats test contributions.
Fixed various typos.
added David M. Cooke for system_info enhancements
cleanup to thanks file.
Renamed text files to text.txt