Introduced a lock for dose_com transmit queues. See ticket #201.
Fix stop in outgoing traffic caused by incorrect handling of 'send' and 'ack' pointers. See ticket #159
Added ACE as link dependency for dose_com.
Using multithread safe operations for the TransmitQueueOverflow variable.

Conflicts:
	src/dose/dose_communication.ss/src/dose_com/DoseComTransmit.cpp
Fixed a bug that made a nack for a fragmented message to be handled as if the requested fragment was not within the sliding window. See ticket #200.
Improved the "rescue" mechanism that triggers when a node has reason to believe that there is a sequence number mixup.
The nack "rescue" mechanism now handles that the sliding window is reset when the first nack is received. See ticket #200.
add support for qt5
make windows.h define less stuff
Updated release notes for release 4.4.1