starting true object wrapping pl
converting methods
converting methods
LibplotRender inherits from Plotter, has context management
hack for eps
send the filename instead of file object.
send the filename instead of file object.
Send the filename to the plot object

Now the plot object opens and closes the file, if sent. This simplifies
many things.  There are no longer race conditions between the open file
and the plot object, since the plot object handles everything.

Also for python 3 there is no way to get a FILE* from an input python
file object.  So this should also make it possible to move to python3
without any difficulties.  For python3 we still need to worry a bit
about encoding, but we can approach that later.
use a context for multipage.

Also commented out the piddle stuff, it imports a device
module that doesn't exist

comment psprint: just make an eps and print it
docs and remove unused imports
Merge pull request #51 from nolta/realobject

Realobject