Fix run-tests.php with Valgrind >= 3.10.0.

The version test that we had in run-tests.php assumed that the major and minor
version numbers were always single digits. This removes that assumption and
also uses version_compare() for the comparison instead of naively converting it
to an integer.

run-tests.php

@@ -576,8 +576,8 @@ if (isset($argc) && $argc > 1) {
 					if (!$valgrind_header) {
 						error("Valgrind returned no version info, cannot proceed.\nPlease check if Valgrind is installed.");
 					} else {
-						$valgrind_version = preg_replace("/valgrind-([0-9])\.([0-9])\.([0-9]+)([.-\w]+)?(\s+)/", '$1$2$3', $valgrind_header, 1, $replace_count);
-						if ($replace_count != 1 || !is_numeric($valgrind_version)) {
+						$valgrind_version = preg_replace("/valgrind-(\d+)\.(\d+)\.(\d+)([.\w_-]+)?(\s+)/", '$1.$2.$3', $valgrind_header, 1, $replace_count);
+						if ($replace_count != 1) {
 							error("Valgrind returned invalid version info (\"$valgrind_header\"), cannot proceed.");
 						}
 						$valgrind_header = trim($valgrind_header);
@@ -1777,7 +1777,7 @@ TEST $file
 		$env['USE_ZEND_ALLOC'] = '0';
 		$env['ZEND_DONT_UNLOAD_MODULES'] = 1;
 
-		if ($valgrind_version >= 330) {
+		if (version_compare($valgrind_version, '3.3.0', '>=')) {
 			/* valgrind 3.3.0+ doesn't have --log-file-exactly option */
 			$cmd = "valgrind -q --tool=memcheck --trace-children=yes --log-file=$memcheck_filename $cmd";
 		} else {