Reset terminal attributes when terminating git send-email

If you break out of the prompts presented to you by git send-email
your terminal can be left in an inconsistent state.  Here we trap
the interrupt signal and reset the terminal before exiting.

Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-send-email.perl

diff --git a/git-send-email.perl b/git-send-email.perl
index 69559b2..f1a8855 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -21,8 +21,11 @@
 use Term::ReadLine;
 use Getopt::Long;
 use Data::Dumper;
+use Term::ANSIColor;
 use Git;
 
+$SIG{INT} = sub { print color("reset"), "\n"; exit };
+
 package FakeTerm;
 sub new {
 	my ($class, $reason) = @_;