[PATCH] Also handle CVS branches with a '/' in their name

I track a CVS project which has a branch with a '/' in the branch name.
Since git wants the branch name to be a file name at the same time,
substitute that character to a '-' by default (override with "-s <subst>").
This should work well, despite the fact that a division and a difference
are completely different :-)

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/git-cvsimport-script b/git-cvsimport-script
index a6a6f0d..2f39af3 100755
--- a/git-cvsimport-script
+++ b/git-cvsimport-script
@@ -28,19 +28,19 @@
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_k,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i);
+our($opt_h,$opt_o,$opt_v,$opt_k,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_s);
 
 sub usage() {
 	print STDERR <<END;
 Usage: ${\basename $0}     # fetch/update GIT from CVS
        [ -o branch-for-HEAD ] [ -h ] [ -v ] [ -d CVSROOT ]
        [ -p opts-for-cvsps ] [ -C GIT_repository ] [ -z fuzz ]
-       [ -i ] [ -k ] [ CVS_module ]
+       [ -i ] [ -k ] [-s subst] [ CVS_module ]
 END
 	exit(1);
 }
 
-getopts("hivko:d:p:C:z:") or usage();
+getopts("hivko:d:p:C:z:s:") or usage();
 usage if $opt_h;
 
 @ARGV <= 1 or usage();
@@ -59,6 +59,7 @@
 	die "CVSROOT needs to be set";
 }
 $opt_o ||= "origin";
+$opt_s ||= "-";
 my $git_tree = $opt_C;
 $git_tree ||= ".";
 
@@ -621,6 +622,7 @@
 		$state = 4;
 	} elsif($state == 4 and s/^Branch:\s+//) {
 		s/\s+$//;
+		s/[\/]/$opt_s/g;
 		$branch = $_;
 		$state = 5;
 	} elsif($state == 5 and s/^Ancestor branch:\s+//) {