Make zend return a proper exit error code when it encounters a parse error.

Zend/zend.c

@@ -781,6 +781,7 @@ ZEND_API void zend_error(int type, const char *format, ...)
 	va_end(args);
 
 	if (type==E_PARSE) {
+		EG(exit_status) = 255;
 		zend_init_compiler_data_structures(TSRMLS_C);
 	}
 }