Fix bug in function name.
Keep base directory in sys.path when building the docs.

This could break sphinx for installation in development mode.
Rename for change to rst format
Convert to rst markup.
fix short description of the license.

Also include all possible license files with the distribution.
Add link for code contributors on GitHub.
Updated to 3-clause BSD.
Fix name of The Trustees.
Rename original license to LICENSE_DANSE.
Update header for BSA, BNL copyright.

This is done for new files only.  They should all refer LICENSE.txt.
Placeholder for BNL license.
Fix scons capitalization.
Fix manual URL.
BNL license text approved by Dorene.

To be merged to each diffpy package repositories.
Add BNL license text.

Merge branch 'license' from diffpy-release.
Skip tests when periodictable is not installed.

Display gentle warning rather than failed tests.
update doc and api doc to 1.0a0
link installation in doc to README.rst on github
Use version.cfg when git is not installed
Use external python for configuration variables.

SCons might be run by a different python than for which we install.
Run env['python'] to determine NumPy paths and distutils build names.