SubCpp Code

made listener optional
Added protection against NULL pointers which were caused if a lock was created without a comment
read version from /include/subversion-1/svn_version.h and use it to determine if neon or serf should be used
fix warning
fix status
added GetRFC822Date
added log message parameter to PropSet
cleaned up log message and login related api in context
added ParseExternalsDescription
fixed 'username' and 'password' parameters in the constructor of SubLua
eolstyle native