[MP] Merge ioquake/ioq3@90eb32c5ab01c7ee4815fd33c76fca788ff4214f
Clear referenced paks when disconnecting
After playing Team Arena, if you switch to Q3A and try to play a demo with cl_allowDownload enabled it would print "Need Paks: blah blah" and not play the demo.
[MP] Merge ioquake/ioq3@86c41d39daee32393d5d48f7fe099bbfd18b0fa7
Fix sending reliable commands before being connected, patch by Eugene C. (ioquake3 bugzilla 4971)