Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
  Raise minimal GCC version, Test with 4.8 is OK With 4.4: error: #pragma GCC diagnostic not allowed inside functions

Author: remicollet

ext/intl/idn/idn.c

@@ -206,7 +206,7 @@ static void php_intl_idn_to(INTERNAL_FUNCTION_PARAMETERS,
 #if defined(__clang__)
 # pragma clang diagnostic push
 # pragma clang diagnostic ignored "-Wdeprecated-declarations"
-#elif ZEND_GCC_VERSION >= 4002
+#elif ZEND_GCC_VERSION >= 4008
 # pragma GCC diagnostic push
 # pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
@@ -217,7 +217,7 @@ static void php_intl_idn_to(INTERNAL_FUNCTION_PARAMETERS,
 		}
 #if defined(__clang__)
 # pragma clang diagnostic pop
-#elif ZEND_GCC_VERSION >= 4002
+#elif ZEND_GCC_VERSION >= 4008
 # pragma GCC diagnostic pop
 #endif
 		efree(ustring);