Code navigation/formatting scripts for p9p acme

These are designed to be run under a git repo, since that's what I'm interacting with 99% of the time (for better or worse).

• a+ - indent
• a- - deindent
• gt - go to (C) function definition
• gh - go to (C) function prototype (only searches headers)
• gr - search for "thing"
• pygt - go to (python) function or class definition
• f - find file, plumb if only 1 file found
• fixws - fix trailing whitespace, convert tabs to spaces, and remove carriage returns