osutil.c: include Python.h before the other headers
This is recommended by the Python documentation, since Python.h defines
some constants.
default = 'changelog'
feedupdated = '<updated>#date|rfc3339date#</updated>'
header = header.tmpl
changelog = changelog.tmpl
changelogentry = changelogentry.tmpl
filelog = filelog.tmpl
filelogentry = filelogentry.tmpl
tags = tags.tmpl
tagentry = tagentry.tmpl