1.5-xserver branch. In this branch Xvnc is going to be rebased on X server 1.5 with major improvements in build automation

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/branches/1.5-xserver@2432 3789f03b-4d11-0410-bbf8-ca57d06f2519