Fix an off-by-one in move_end. ("End" key)
Turn failure to set SIGINT handler into a warning.
Fix warning message if the signal handler couldn't be set.
make pudb post_mortem consistent with pdb
Merge pull request #71 from sanga/pdb_consistency

make pudb post_mortem consistent with pdb
Merge branch 'master' of https://github.com/inducer/pudb