Add a batch file driver for Windows

merge: introduce mergestate

Merge with crew-stable.

win32text: actually import util so util.binary() can be used

issue 1053: heavily qualify the "cp -al" advice for cloning

Get rid of reimplementations of util.binary

Let util.binary check entire data for \0 (issue1066, issue1079)

keyword: check for '\0' in entire data before acting util.binary might not be safe enough, as it fails eg. on certain pdf files (issue1066).

keyword: make overwrite() arguments mandatory

keyword: compact setting of optional arguments

keyword: privatize remaining monkeypatches by moving them into reposetup Make it more transparent if and when monkeypatches are needed.

keyword: collect filename patterns, wrap dispatch._parse in uisetup Store [keyword] config in kwtools. hgcmd defaults to empty string.

Merge

Tidy code, fix typo

Added hgexecutable support for py2exe/frozen scripts

Remove trailing space

merge with crew-stable

python-2.6: md5 import in test-archive helper

python-2.6: deprecation of GzipFile.filename

highlight: backward compatibility with pygments 0.5.1

Fix spacing error introduced in 5efd447a9b8d

Merge with crew-stable

convert: check svn branches are directories

Merge from crew-stable.