git-svn: Save init/clone --ignore-paths in config

The --ignored-paths argument is now stored as
"svn-remote.$REMOTE_NAME.ignore-paths" in the config file.

[ew: edited subject and message]
Signed-off-by: Ben Jackson <ben@ben.com>
Acked-by: Eric Wong <normalperson@yhbt.net>

git-svn.perl

@@ -336,6 +336,9 @@ sub do_git_init_db {
 		command_noisy('config', "$pfx.$i", $icv{$i});
 		$set = $i;
 	}
+	my $ignore_regex = \$SVN::Git::Fetcher::_ignore_regex;
+	command_noisy('config', "$pfx.ignore-paths", $$ignore_regex)
+		if defined $$ignore_regex;
 }
 
 sub init_subdir {