'git foo' program identifies itself without dash in die() messages

This is a mechanical conversion of all '*.c' files with:

	s/((?:die|error|warning)\("git)-(\S+:)/$1 $2/;

The result was manually inspected and no false positive was found.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-commit-tree.c

@@ -118,7 +118,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
 	}
 
 	if (strbuf_read(&buffer, 0, 0) < 0)
-		die("git-commit-tree: read returned %s", strerror(errno));
+		die("git commit-tree: read returned %s", strerror(errno));
 
 	if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1)) {
 		printf("%s\n", sha1_to_hex(commit_sha1));