git-svn: unlink internal index files after operations

Being git, we can generate these very quickly on the fly as
needed, so there's no point in wasting space for these things
for large projects.
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

git-svn.perl

@@ -396,6 +396,7 @@ sub cmd_set_tree {
 	}
 	$gs->set_tree($_) foreach @revs;
 	print "Done committing ",scalar @revs," revisions to SVN\n";
+	unlink $gs->{index};
 }
 
 sub cmd_dcommit {
@@ -514,6 +515,7 @@ sub cmd_dcommit {
 			$last_rev = $cmt_rev;
 		}
 	}
+	unlink $gs->{index};
 }
 
 sub cmd_find_rev {
@@ -1374,6 +1376,7 @@ sub fetch_all {
 
 	($base, $head) = parse_revision_argument($base, $head);
 	$ra->gs_fetch_loop_common($base, $head, \@gs, \@globs);
+	unlink $_->{index} foreach @gs;
 }
 
 sub read_all_remotes {