only enable pread/pwrite for linux. fixes #533 and fixes #532
only enable pread/pwrite for linux. fixes #533 and fixes #532

xeodou/go-sqlcipher,accense/go-sqlite3,lyonel/go-sqlite3,accense/go-sqlite3,mattn/go-sqlite3,mattn/go-sqlite3,lyonel/go-sqlite3,xeodou/go-sqlcipher,accense/go-sqlite3,lyonel/go-sqlite3,mattn/go-sqlite3,xeodou/go-sqlcipher