Remove obsolete expat files
This should fix #779. As @mdboom explained these equivalencies should be using the value of c (in m/s) as a scaling factor, but its units shouldn't really come into it. This should have been changed to c.value and h.value as part of #745.
fix another typo related to subprocesses in open file detection
Merge pull request #780 from mdboom/setup/pkg-config-pkg-missing

Add default libraries to the list if the pkg-config lookup fails
Merge pull request #782 from eteq/fix-failing-open-file-test

Fix failing open file test
Merge pull request #782 from eteq/fix-failing-open-file-test

Fix failing open file test
Merge pull request #779 from iguananaut/issue-779

Quantity throws an unrelated warning when converting through equivalencies?
Merge pull request #779 from iguananaut/issue-779

Quantity throws an unrelated warning when converting through equivalencies?
Merge pull request #780 from mdboom/setup/pkg-config-pkg-missing

Add default libraries to the list if the pkg-config lookup fails
turn off quiet on the travis scipy install, because travis times out
Merge pull request #785 from eteq/unquiet-scipy-install

Turn off -q on the travis' pip install scipy
revamped travis.yml to be mainly-include and version updates
Switch to working numpy/3.x combinations
Unquiet scipy
Changed .travis.yml to be *all* includes
Move egg_info to be the non-include builds
Updated numpy/python version combinations
cleaned broken numpy 1.6.2 on py 3.x builds
adjusted travis.yml to use only working scipy on 3.x and do scipy builds first as suggested by @astrofrog
Add test of setting distance a second time on a Coordinate