Replace distribute_setup.py with ez_setup.py

and ``setuptools_bootstrap.py``
Merge pull request #38 from mwcraig/patch-1

Replace distribute_setup.py with ez_setup.py
Support `setup.py test --coverage` in affiliated packages.
Merge pull request #39 from mdboom/coverage

Support `setup.py test --coverage` in affiliated packages.
Simplify package-template usage and updating by requiring fewer files to
be edited.
Add information about pulling changes to package template
Store stuff in "metadata" section, not "affiliated" section.
Insert space before comment.
Fix documentation build
Change ``clean`` rule to remove generated docs

Made necessary by https://github.com/astropy/astropy/commit/b94fd38e5613c838c41ef5fa57ed9ba8289b5046
Elaborate on the need to search for .c files in a comment.
Merge pull request #41 from mdboom/auto-setup

Simplify package-template usage
Merge pull request #42 from mwcraig/patch-2

Change ``clean`` rule to remove generated docs
fixing compatibility with new astropy0.4 coordinates API
workarounds for default-to-ICRS approach
Vizier tests fixed by checking for multiple parent class types.  1 down,
many to go
shorter CoordGenerator names, fixed IRSA
fix UKIDSS, SDSS
fix simbad.  less readable in current version, unfortunately
fix NVAS, NED.  NVAS requires an awful re hack