PyPE (Python Programmers Editor)

Fixed long-standing issue with PyPE signaling a syntax error on the last line in some situations.
Added _ast-based compiler for Python 2.5 and later (compiler.ast is deprecated in 2.6, and removed in 3.0).
The new parser is a bit faster on large files (1.2 seconds vs. 1.4 seconds to parse pype.py on my machine).
Also removed unnecessary traceback printout on parse failure (it didn't hurt anything, just logged too much).