Update to serf 1.3.3
Update build.txt.
Update to Subversion 1.8.5
Update zlib.build from TortoiseSVN.
Tag the 1.9.3 release
Bump version to 1.9.3
Update checkyear.js from TSVN.
Update Subversion to v1.8.4 and sqlite to v3.8.1.
Update Scintilla to v3.3.6.
Update upx to v3.91.
It now supports x64 binaries.
