- Remove unused code
- Use standard functions declared in common.c
- Change tests to do a runtime test for the max name length of a path
component (aka NAME_MAX). The actual value might differ from the hard
coded NAME_MAX depending on the file system used.
- Make open(2) more POSIX compliant
- Add a test case for dangling symlinks and open() syscall with O_CREAT and
O_EXCL on a symlink.
- Update open(2) man page to reflect change.
