* Subprocesses spawned from various git programs were often left running
to completion even when the top-level process was killed.
+ * Using "git grep -l/-L" together with options -W or --break may not
+ make much sense as the output is to only count the number of hits
+ and there is no place for file breaks, but the latter options made
+ "-l/-L" to miscount the hits.
+
* "git log --first-parent $pathspec" did not stay on the first parent
chain and veered into side branch from which the whole change to the
specified paths came.
* When "git push" fails to update any refs, the client side did not
report an error correctly to the end user.
+ * "git mergetool" now gives an empty file as the common base version
+ to the backend when dealing with the "both sides added, differently"
+ case.
+
+ * When asking for a tag to be pulled, "request-pull" did not show the
+ name of the tag prefixed with "tags/", which would have helped older
+ clients.
+
+ * "git submodule add $path" forgot to recompute the name to be stored
+ in .gitmodules when the submodule at $path was once added to the
+ superproject and already initialized.
+
Also contains minor fixes and documentation updates.