Rewrite of the Ajax module by Julian Aubourg. Some (dated) details ca…

…n be found here: http://oksoclap.com/6Y26bm1ZsB more details are forthcoming. Fixes #7195.

Makefile

@@ -23,7 +23,11 @@ BASE_FILES = ${SRC_DIR}/core.js\
 	${SRC_DIR}/traversing.js\
 	${SRC_DIR}/manipulation.js\
 	${SRC_DIR}/css.js\
-	${SRC_DIR}/ajax.js\
+  ${SRC_DIR}/ajax.js\
+  ${SRC_DIR}/xhr.js\
+  ${SRC_DIR}/transports/jsonp.js\
+  ${SRC_DIR}/transports/script.js\
+  ${SRC_DIR}/transports/xhr.js\
 	${SRC_DIR}/effects.js\
 	${SRC_DIR}/offset.js\
 	${SRC_DIR}/dimensions.js