fix datatype mismatch warnings
fix some datatype mismatches in ext/bz2

Additionally, as bz2 read/write routines expect int for sizes, it could
overflow. So fixed the logic. Things in compress/decompress are more
complicated so they was left as they are yet.
fix datatype mismatch warnings
fix datatype mismatch warnings
fix datatype mismatches
fix datatype mismatche warnings
fix datatype mismatches
Merge branch 'master' of git://github.com/php/php-src