moved everything into /trunk/ to create the standard svn layout, for use with tools that require this (eg. git-svn). IMPORTANT: do NOT do an `svn up`. instead, re-use your working copy's existing files with `svn switch` (http://svnbook.red-bean.com/en/1.6/svn.ref.svn.c.switch.html).

expand_braces: Fixed bug where needed to get next line from stdin in raw mode, so that \ won't be parsed as escape chars

expand_braces: Also expand XPaths containing [], with up to one level of nesting (which is the most we currently use), because many {} XPaths do in fact contain []. Debug-print intermediate values when env var expand_braces_debug is true. Added usage message.

expand_braces: Fixed bug where ./{ and brackets with commas inside {} are unparseable, and should not be expanded

expand_braces: Fixed bug where `head -1` seemed to read more lines than just the first, causing EOF to be returned after the first line, by using `read` instead. Support data containing \r (such as Excel-dialect CSVs) by removing it. Fixed bug where ./{...} was not being properly escaped.

Added expand_braces