PEP8 all the things that autopep8 was able to do

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2173 ed100bfc-0583-0410-97f2-c26b58777a21
a bit more pep8-ish cleanup.  Might not do much more than this but we'll see

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2174 ed100bfc-0583-0410-97f2-c26b58777a21
Fix several tests that were still failing after the last few cleanup commits. Not sure how I let this pass.  Note I undid any changes from '== True/False' to 'is True/False' despite PEP8's position on this. It turns out that Numpy supplies its own True/False of type np.bool_ that does not compare identical to the builtin True/False *sigh*.  I also have no idea why the one comparison in test_image.py changed.  The new value is indeed the correct one, but that doesn't explain why it was passing before--slightly disconcerting.

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2175 ed100bfc-0583-0410-97f2-c26b58777a21
rename CompDataHDU.updateHeader and CompDataHDU.updateHeaderData to _update_header and _update_header_data respectively--they are now the internal methods they always should have been, though there are still some deprecation-pending backwards-compatibility interfaces left in place in the off chance that anyone is making the mistake of calling these methods manually.

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2176 ed100bfc-0583-0410-97f2-c26b58777a21
deprecate updateCompressedData as well

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2177 ed100bfc-0583-0410-97f2-c26b58777a21
Finally replaced _hdrLoc, _datLoc, and _datSpan with the more readable _header_offset, _data_offset, and _data_size respectively.  I did leave in place backwards compatibility for these attributes because even though they are used primarily internally they are pervasive enough that some applications might be using them (espcially if anybody has any of their own HDU classes a la stpyfits)

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2178 ed100bfc-0583-0410-97f2-c26b58777a21
Remove interfaces that have been deprecated since 3.0.  Mark any pending deprecations to full deprecations.  Add a description to the changelog of the API changes.

git-svn-id: http://svn6.assembla.com/svn/pyfits/trunk@2179 ed100bfc-0583-0410-97f2-c26b58777a21