More specific test for blas functions.
Change Sphinx theme to sphinx_rtd_theme
Merge pull request #1171 from ysitu/rtd

Change Sphinx theme to sphinx_rtd_theme
Provide replacements if BLAS not available from SciPy.
Merge pull request #1169 from chebee7i/issue1169

Provide replacements for low level BLAS functions for scipy < 0.12.