Major overhaul introducing http pipelining support and shared connection

cache within the multi handle.

include/curl/curlver.h

@@ -28,13 +28,13 @@
 
 /* This is the version number of the libcurl package from which this header
    file origins: */
-#define LIBCURL_VERSION "7.15.6-CVS"
+#define LIBCURL_VERSION "7.16.0-CVS"
 
 /* The numeric version number is also available "in parts" by using these
    defines: */
 #define LIBCURL_VERSION_MAJOR 7
-#define LIBCURL_VERSION_MINOR 15
-#define LIBCURL_VERSION_PATCH 6
+#define LIBCURL_VERSION_MINOR 16
+#define LIBCURL_VERSION_PATCH 0
 
 /* This is the numeric version of the libcurl version number, meant for easier
    parsing and comparions by programs. The LIBCURL_VERSION_NUM define will
@@ -51,6 +51,6 @@
    and it is always a greater number in a more recent release. It makes
    comparisons with greater than and less than work.
 */
-#define LIBCURL_VERSION_NUM 0x070f06
+#define LIBCURL_VERSION_NUM 0x071000
 
 #endif /* __CURL_CURLVER_H */

include/curl/multi.h

@@ -270,6 +270,9 @@ typedef enum {
   /* This is the argument passed to the socket callback */
   CINIT(SOCKETDATA, OBJECTPOINT, 2),
 
+    /* set to 1 to enable pipelining for this multi handle */
+  CINIT(PIPELINING, LONG, 3),
+
   CURLMOPT_LASTENTRY /* the last unused */
 } CURLMoption;