add CURL_HTTP_VERSION_2_0 and CURL_VERSION_HTTP2

Author: masakielastic

NEWS

@@ -16,6 +16,9 @@ PHP                                                                        NEWS
   . Fixed bug #69221 (Segmentation fault when using a generator in combination
     with an Iterator). (Nikita)
 
+- Curl:
+  . Implemented FR#69278 (HTTP2 support). (Masaki Kagaya)
+
 - Enchant:
   . Fixed bug #65406 (Enchant broker plugins are in the wrong place in windows
     builds). (Anatol)

UPGRADING

@@ -408,6 +408,7 @@ None
 - cURL:
   - Added CURLOPT_SAFE_UPLOAD to be used with curl_setopt().
   - Added CURL_WRAPPERS_ENABLED to reflect --with-curlwrappers.
+  - Added CURL_HTTP_VERSION_2_0 and CURL_VERSION_HTTP2 in 5.5.24+.
 
 - GD
   - Added constants for imageflip:

ext/curl/interface.c

@@ -858,6 +858,9 @@ PHP_MINIT_FUNCTION(curl)
 	/* Curl Http Version constants (CURLOPT_HTTP_VERSION) */
 	REGISTER_CURL_CONSTANT(CURL_HTTP_VERSION_1_0);
 	REGISTER_CURL_CONSTANT(CURL_HTTP_VERSION_1_1);
+#if LIBCURL_VERSION_NUM >= 0x072100 /* 7.33.0 */
+	REGISTER_CURL_CONSTANT(CURL_HTTP_VERSION_2_0);
+#endif
 	REGISTER_CURL_CONSTANT(CURL_HTTP_VERSION_NONE);
 
 	/* Curl Lock constants */
@@ -887,6 +890,9 @@ PHP_MINIT_FUNCTION(curl)
 	REGISTER_CURL_CONSTANT(CURL_VERSION_KERBEROS4);
 	REGISTER_CURL_CONSTANT(CURL_VERSION_LIBZ);
 	REGISTER_CURL_CONSTANT(CURL_VERSION_SSL);
+#if LIBCURL_VERSION_NUM >= 0x072100 /* 7.33.0 */
+	REGISTER_CURL_CONSTANT(CURL_VERSION_HTTP2);
+#endif
 
 #if LIBCURL_VERSION_NUM >= 0x070a06 /* Available since 7.10.6 */
 	REGISTER_CURL_CONSTANT(CURLOPT_HTTPAUTH);