compile avalon driver on win32 and win64
Merge remote-tracking branch 'upstream/master'
fliter out the wrong result from adjust fan code
Merge pull request #425 from BitSyncom/avalon

fliter out the wrong result from adjust fan code
Merge remote-tracking branch 'upstream/master'
define le32toh if needed
Merge pull request #426 from gzm55/master

compile avalon driver on win32 and win64
Set default ocl work size for scrypt to 256.