- separate file_system_util into vfs functions (-> vfs/vfs_util) and
file_system (avoids ugly fs_util namespace prefix)
- get rid of non-portable O_BINARY_NP etc. flags
- use standard O_WRONLY etc. flags instead of LIO_WRITE; but avoid the
need for specifying O_CREAT|O_TRUNC
- only open files for aio when O_DIRECT is specified (which 0ad does
not) - avoids wasting time and security issues
- return file descriptor directly instead of via output param
- waio: safer FCB mechanism that avoids mixing descriptors between lowio
and aio
This was SVN commit r9550.
