Add: fastcoin model.
GUI: replace a icon
Alt: change GUI for FastCoin
Address: change prefix.
Build: disable tests in native build.
Address: prefix change.
Script: directly make deploy
Merge branch 'track' into fastcoin
1) Net: change default port and Protocol magic number.
2) Block: mature after 14 blocks and confirm after 2 block.
3) Net: more fast retargeting.
Depends: add gmp library.
Hash: compute pow with block's version.
Block: setup version=3, to enable scrypt mining.
Merge branch 'fastcoin'