NetFS bugs on RISC OS
---------------------

If NetFS_Op() is called via OSWORD &14, problems happen
if an error is returned. For example,

NetFS_Op(0,"Account filename acc (acc)")

generates a random error instead of returning
error "Insufficient access" or "Account bankrupt" string.

NetFS_Op(19,5,10,filename)

generates a random error instead of returning
error "Insufficient access" or "Account bankrupt" string.

When using these calls, must use BLib.Generic.NetFS instead.
Read info calls don't return errors, they return 'type=0'
for not found, etc.