[PEPr] +1 for System::System_Launcher

Bill Shupp (http://pear.php.net/user/shupp) has voted +1 on the proposal for System::System_Launcher. Proposal information: http://pear.php.net/pepr/pepr-proposal-show.php?id=642 Vote information: http://pear.php.net/pepr/pepr-vote-show.php?id=642&handle=shupp Comment: Nice work. Two minor comments: I don't think it's necessary to extend PEAR_Exception (unless there's a specific reason I'm not aware of), rather just extend Exception. I've found that is_null() is considerably slower than !== null. You might consider using that instead.