- this prevents an interference with the IPC message queue (which is used
for URI processing) when running a testnet and mainnet instance in
parallel
- to check for testnet, I had to raise the ParseParameters() call in
main() to the topmost position
- add IMPLEMENT_RANDOMIZE_STACK for ipcThread()
- log / print boost interprocess exceptions
- use MAX_URI_LENGTH in guiconstants.h (also used in qrcodedialog.cpp)
- remove unneeded includes and ipcShutdown() from qtipcserver.cpp
- fix a small mem-leak by deleting mq before re-using it
- make ipcThread() and ipcThread2() static functions
- add some more comments
