test result files have the wrong names
start to implement splitpatch
return value from split_patch
chunks are now simple objects
splitpatch tests pass
splitpatch command-line utility
descriptor line might be missing locator
fix test script to return to the right place after each test
not all commit messages have a body
splitpatch results for patch t2

These were generated by splitpatch itself, so at present the test is
trivial, just checking that the results haven't changed from this
snapshot.  But I eyeballed them and they look okay, and the snapshot
provides a baseline for improvements or to detect regressions.
Merge branch 'splitpatch' (early part)
TODO notes