Add a new author state "ign" to git.git-authors

This is to be used for application code that currently
resides in git, but only for authors whose only not
insignificant contributions are for that code (such as
"imap-send").

Presently, this is used for Mike McCormack and Robert
Shearman.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git.git-authors

@@ -28,6 +28,9 @@
 #   his/her consent on a patch-by-patch basis.
 # "???" means the person is a prominent contributor who has
 #   not yet made his/her standpoint clear.
+# "ign" means the authors consent is ignored for the purpose
+#   of libification. This is because the author has contributed
+#   to areas that aren't interesting for the library.
 #
 # Please try to keep the list alphabetically ordered. It will
 # help in case we get all 600-ish git.git authors on it.
@@ -49,6 +52,7 @@ ok	Kristian Høgsberg <krh@redhat.com>
 ok	Linus Torvalds <torvalds@linux-foundation.org>
 ok	Lukas Sandström <lukass@etek.chalmers.se>
 ok	Matthieu Moy <Matthieu.Moy@imag.fr>
+ign	Mike McCormack <mike@codeweavers.com> (imap-send)
 ok	Nicolas Pitre <nico@cam.org>
 ok	Paolo Bonzini <bonzini@gnu.org>
 ok	Paul Kocher <paul@cryptography.com>
@@ -56,6 +60,7 @@ ok	Peter Hagervall <hager@cs.umu.se>
 ok	Pierre Habouzit <madcoder@debian.org>
 ok	Pieter de Bie <pdebie@ai.rug.nl>
 ok	René Scharfe <rene.scharfe@lsrfire.ath.cx>
+ign	Robert Shearman <rob@codeweavers.com> (imap-send)
 ok	Shawn O. Pearce <spearce@spearce.org>
 ok	Steffen Prohaska <prohaska@zib.de>
 ok	Sven Verdoolaege <skimo@kotnet.org>