Update serf to v1.3.1.
Update sqlite.build from TortoiseSVN.
Update the version check file.
tag the 1.9.1 release
Update Versions.txt
Update build files with some improvements from the TortoiseSVN build files.
Bump version to 1.9.1
Update to serf 1.3.0 and svn 1.8.1
Fix the LNK4049 warning.
Fix issue #390.