Fix totalmem computation, see
https://rt.cpan.org/Public/Bug/Display.html?id=130740

Index: Makefile.PL
--- Makefile.PL.orig
+++ Makefile.PL
@@ -38,12 +38,7 @@ for ($^O) {
     }
   } elsif (/bsd/) {
     copy ('arch/bsd.xs', 'MemInfo.xs');
-    if (/netbsd/) {
-      $define = '-DNETBSD';
-      print "Sys::MemInfo for NetBSD\n";
-    } else {
-      print "Sys::MemInfo for *BSD\n";
-    }
+    print "Sys::MemInfo for *BSD\n";
   } elsif (/hpux/) {
     copy ('arch/hpux.xs', 'MemInfo.xs');
     $define ='-D_XOPEN_SOURCE_EXTENDED';