Update to 1.9.4 (leaf).

This required a fairly massive rototill of the PKGNAME/DISTNAME
because of bugs in upstream distfile generation, reported at
https://github.com/jswhit/pyproj/issues/7
But there are no signficant changes in packaging other than coping with the
distfile naming bug.

1.9.4 (git tag v1.9.4rel)
* migrate to github from googlecode.
* update proj4 source code from svn r2595 (version 4.9.0RC2).
* include runtime_library_dirs in setup-proj.py.
* added to_latlong method (issue 51).
* fix back azimuth when lon1 and lon2 are identical.

(gdt)