[ChangeSet] print.m: support for figure handles

[Ben Abbott]

I modified print.m to support a figure handle as an input.

It is a trivial change, but permits printing as is often done (by me) in 
Matlab. For example,

   print (gcf, '-pdf', 'foo.pdf')

Please consider the attached changeset.

Ben

changeset-print.txt
Description: Text document