[TxMt] About the reStructuredText bundle

Hi,

Two things tripped me up just now using the reST bundle:

(1) I'm not sure if it's broken or not, but the Validate Syntax command didn't work for me as it stands, and it's the first line that's tripping it up for me: `TRST=${TM_PYTHON:=rst2html.py}`

I found that most of the rest commands used `TRST=$ {TM_RST2HTML:=rst2html.py}` and when I switched it in for that, it seems to be working.

Just out of curiousity, where/how is this $TM_RST2HTML environment variable getting set, anyway (and what's `:=`)?

(2) I feel like the "Convert Document to HTML" command should have its output set to "Create New Document" instead of replacing the reST in the file w/ the HTML so you don't blow out the file you've been working on.

Thanks, -steve