Questions about syscalls.cc

[Ken Brown]

1. Now that we're no longer building newlib's stdio64, am I right that we no 
longer need to export aliases for _open64, _lseek64, _fstat64_r, and _stat64_r?

2. Do we need all those defines at the beginning of syscalls.cc?  I *think* I 
understand the reason for the ones beginning with underscore: We don't want 
newlib's prototypes for these functions because we're exporting aliases rather 
than defining functions.  Right?  But what about fstat, lstat, pread, and 
pwrite?  And why is stat different?

Ken