[MAJOR] get rid of SV_STANALYZE (step 2)

The SV_STANALYZE state was installed on the server side but was really
meant to be processed with the rest of the request on the client side.
It suffered from several issues, mostly related to the way timeouts were
handled while waiting for data.

All known issues related to timeouts during a request - and specifically
a request involving body processing - have been raised and fixed. At this
point, the code is a bit dirty but works fine, so next steps might be
cleanups with an ability to come back to the current state in case of
trouble.
diff --git a/include/types/proto_http.h b/include/types/proto_http.h
index 546564b..d592b71 100644
--- a/include/types/proto_http.h
+++ b/include/types/proto_http.h
@@ -39,13 +39,12 @@
 
 /* different possible states for the server side */
 #define SV_STIDLE	0
-#define SV_STANALYZE	1  /* this server state is set by the client to study the body for server assignment */
-#define SV_STCONN	2
-#define SV_STHEADERS	3
-#define SV_STDATA	4
-#define SV_STSHUTR	5
-#define SV_STSHUTW	6
-#define SV_STCLOSE	7
+#define SV_STCONN	1
+#define SV_STHEADERS	2
+#define SV_STDATA	3
+#define SV_STSHUTR	4
+#define SV_STSHUTW	5
+#define SV_STCLOSE	6
 
 /*
  * Transaction flags moved from session