Primecoin HP: Branding as Primecoin-HP or Primecoin High Performance
Primecoin HP: Add notices that GMP is used and that it is licensed under LGPLv3.
Primecoin: Update subversion format based on BIP 14
Primecoin HP: Fixed -l1cachesize parameter. Print it to debug.log.
Primecoin: New optimized default parameters.

Set the default size of sieve segments (-l1cachesize) to 28 kB (28672 bytes).
Set default sieve size to 917504 which is exactly 4 times the number of bits in each segment.
Primecoin HP: Increase the initial primorial in order to get the miner to full speed faster.
Merge branch 'master' of https://github.com/mikaelh2/primecoin into experimental