check_ifstatus: perfdata bug

The perfdata output violates the current Nagios Plugin Development Guidelines
(http://nagiosplug.sourceforge.net/developer-guidelines.html#AEN202 :
"space separated list of label/value pairs").

Thus the Addon PNP did not read the perdata correctly.

The patch replaces the commas with spaces in the perfdata output.

Many thanks to Patric Wust.
---
Closes #1169 and #721.

THANKS.in

@@ -323,3 +323,4 @@ Eric J. Mislivec
 Jean-Claude Computing
 Andy Brist
 Mikael Falkvidd
+Patric Wust

plugins-scripts/check_ifstatus.pl

@@ -221,7 +221,7 @@ foreach $key (keys %ifStatus) {
 			$ifexclude,
 			$ifunused);
    }
-my $perfdata = sprintf("up=%d,down=%d,dormant=%d,excluded=%d,unused=%d",$ifup,$ifdown,$ifdormant,$ifexclude,$ifunused);
+my $perfdata = sprintf("up=%d down=%d dormant=%d excluded=%d unused=%d",$ifup,$ifdown,$ifdormant,$ifexclude,$ifunused);
 print ("$state: $answer |$perfdata\n");
 exit $ERRORS{$state};