long osdUserGet(char *username, long namelen)osdUserGet() returns the current user name in the buffer specified by
username.
The length of the provided buffer must be specified in namelen.
Where the under-lying operating system supports such concepts,
osdUserGet() returns the name of the effective user, not
the real user.
Return TRUE on success and FALSE on failure.
| username | the returned user name buffer |
| namelen | the length of the buffer username |