RDP: add client-1.8.4.
bugref:9356: Update rdesktop-vrdp to 1.8.4
client-1.8.4 is a Subversion copy of 1.8.3 with the upstream 1.8.3 to 1.8.4
patch applied and a couple of fixes and changes after review, namely:
Stopped disabling the new pointer data format for our build, as this is no