Description of Problem:
When using saveas with a pbm externsion, the file cannot be read back.

Version-Release number of selected component (if applicable):
ee-0.3.12-5

How Reproducible:
Always
Load an image (I used a .gif file)

Steps to Reproduce:
1. Load an image (I used a .gif file) 
2. Use saveas and change teh extension to .pbm
3. Try to open the file with the .pbm extension, it fails

Actual Results:
The file created contains an empty line after the comment. Removing that
empty line seems to fix the problem.

I am not sure if the problem is with the writing or reading of pbm file.
And this might be due to imlib instead of ee.

Expected Results:


Additional Information: