a -frandom-seed=$@ for bitcoind's makefile.*

As per
https://github.com/bitcoin/bitcoin/issues/2290#issuecomment-21150446 I
have changed the four bitcoind make files to reflect a more
"deterministic" gcc compile. The same can be done for bitcoin-qt's
makefile.release & makefile.debug, but they are created by
bitcoin-qt.pro via qmake. I just changed mine but I don't know how to
modifiy bitcoin-qt.pro to do it automatically.