PHP4 Compatablity

My public host still uses PHP4.... grrr... so i made User Handshakes PHP4 Compatible for you :) It seems to work, though its not 100% tested, please review. Most of the changes had to do with $iusername, $ausername, and $username being listed like:

$username = db_fetch_object(db_query("SELECT name FROM {users} WHERE uid = %d", $uid))->name;

my "fix" was simple,

$username = db_fetch_object(db_query("SELECT name FROM {users} WHERE uid = %d", $uid));
$username = $username->name;

There was a couple other places in the menu where this got a little confusing, but i got all the errors removed from it for PHP4 while maintaining the functionality as far as i can tell. I will be doing further extensive testing later and post a new patch if i find one is needed.

Search the string "//PHP4 Modified:" to find my changes, theres about 15-25 i think, I didn't bother to count, but i flagged my changes for you.