* "GIT_EDITOR=: git branch --edit-description" resulted in failure,
which has been corrected.
+ * Documentation on various Boolean GIT_* environment variables have
+ been clarified.
+
+ * "git multi-pack-index repack/expire" used to repack unreachable
+ cruft into a new pack, which have been corrected.
+
+ * The code to clean temporary object directories (used for
+ quarantine) tried to remove them inside its signal handler, which
+ was a no-no.
+
+ * "git branch --edit-description" on an unborh branch misleadingly
+ said that no such branch exists, which has been corrected.
+
Also contains various documentation updates and code clean-ups.