Add mlock/munlock support to peg data file into memory
Add mlock/munlock support to peg data file into memory

Add a command line option to enable, and support for locking data file pages into memory

jmptrader/simplehttp,jtsui/leveldb-daemon,bitly/simplehttp,jtsui/leveldb-daemon,jmptrader/simplehttp,bitly/simplehttp,bitly/simplehttp,jtsui/leveldb-daemon,jmptrader/simplehttp