Plugins list table: Use case-insensitive sorting.

props GaryJ.
fixes #32735.
Built from https://develop.svn.wordpress.org/trunk@33076


git-svn-id: http://core.svn.wordpress.org/trunk@33047 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-plugins-list-table.php

@@ -257,10 +257,11 @@ class WP_Plugins_List_Table extends WP_List_Table {
 		if ( $a == $b )
 			return 0;
 
-		if ( 'DESC' == $order )
-			return ( $a < $b ) ? 1 : -1;
-		else
-			return ( $a < $b ) ? -1 : 1;
+		if ( 'DESC' == $order ) {
+			return strcasecmp( $b, $a );
+		} else {
+			return strcasecmp( $a, $b );
+		}
 	}
 
 	/**