Previous default output remains when test cases are run individually. ok tracey

ok stsp

Rename things to better match their intended purpose. Tweak namespacing. Add a function for freeing config items that are dynamically allocated. Add 'struct gotconfig' to make room for potential global settings we might want to add later, instead of implementing just a list of remote repositories. ok tracey

With -R, the -P option did not show any paths. Regression test added here demonstrates the problem.

ok tracey stsp

New files were added under the wrong tree in the repository if the work tree has a path prefix. Fix this problem and catch it in the existing commit_with_path_prefix regression test.

If the work tree's path prefix does not exist in the first of the two trees, then 'got cherrypick' failed with "no such entry found in tree". But this is a legitimate situation, as shown in the new test added here. The first tree could be the empty tree, for example, which should result in 'got cherrypick' adding all files from the second tree instead of complaining about a non-existent path-prefix directory in the first tree.