Merge branch 'kb/send-email-fifo'

* kb/send-email-fifo:
  git-send-email: Accept fifos as well as files

git-send-email.perl

@@ -408,7 +408,7 @@ for my $f (@ARGV) {
 		push @files, grep { -f $_ } map { +$f . "/" . $_ }
 				sort readdir(DH);
 
-	} elsif (-f $f) {
+	} elsif (-f $f or -p $f) {
 		push @files, $f;
 
 	} else {
@@ -418,10 +418,12 @@ for my $f (@ARGV) {
 
 if (!$no_validate) {
 	foreach my $f (@files) {
+		unless (-p $f) {
 			my $error = validate_patch($f);
 			$error and die "fatal: $f: $error\nwarning: no patches were sent\n";
 		}
 	}
+}
 
 if (@files) {
 	unless ($quiet) {