first commit

plugins/jquery-validation/additional/maxsizetotal.js

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+// Limit the size of all files in a FileList.
+$.validator.addMethod( "maxsizetotal", function( value, element, param ) {
+	if ( this.optional( element ) ) {
+		return true;
+	}
+
+	if ( $( element ).attr( "type" ) === "file" ) {
+		if ( element.files && element.files.length ) {
+			var totalSize = 0;
+
+			for ( var i = 0; i < element.files.length; i++ ) {
+				totalSize += element.files[ i ].size;
+				if ( totalSize > param ) {
+					return false;
+				}
+			}
+		}
+	}
+
+	return true;
+}, $.validator.format( "Total size of all files must not exceed {0} bytes." ) );
+