Changes 1.7.5.4:

Changes 1.7.5.4:
* The single-key mode of "git add -p" was easily fooled into thinking
  that it was told to add everthing ('a') when up-arrow was pressed by
  mistake.
* Setting a git command that uses custom configuration via "-c var=val"
  as an alias caused a crash due to a realloc(3) failure.
* "git diff -C -C" used to disable the rename detection entirely when
  there are too many copy candidate paths in the tree; now it falls
  back to "-C" when doing so would keep the copy candidate paths
  under the rename detection limit.
* "git rerere" did not diagnose a corrupt MERGE_RR file in some cases.