Log Message:
Add a Makefile.common for evince and evince-nautilus.
They used a sharded distinfo, but the version was not updated
for evince-nautilus as seen in recent bulk build report.

So evince-nautilus is being updated to 0.5.2 version also.
I am not sure of all the changes, other than:

 Check if date is invalid. Fix for bug 318134.
 Some build fixes for cygwin. Patch by yselkowitz@users.sourceforge.net