Fixes since v1.7.12.1
---------------------
+ * When "git am" is fed an input that has multiple "Content-type: ..."
+ header, it did not grok charset= attribute correctly.
+
* Even during a conflicted merge, "git blame $path" always meant to
blame uncommitted changes to the "working tree" version; make it
more useful by showing cleanly merged parts as coming from the other
is not their language, mildly irritating others. Localization to
the line has been disabled for now.
+ * "git log --all-match --grep=A --grep=B" ought to show commits that
+ mention both A and B, but when these three options are used with
+ --author or --committer, it showed commits that mention either A or
+ B (or both) instead.
+
* The subcommand to remove the definition of a remote in "git remote"
was named "rm" even though all other subcommands were spelled out.
Introduce "git remote remove" to remove confusion, and keep "rm" as