Commit 5baa20b86e23ace3817c4ed38f9de7ea57dcf4a3

Edward Thomson 2016-06-01T14:52:25

round-trip trees through index_read_index Read a tree into an index using `git_index_read_index` (by reading a tree into a new index, then reading that index into the current index), then write the index back out, ensuring that our new index is treesame to the tree that we read.