REORG: include: move channel.h to haproxy/channel{,-t}.h
The files were moved with no change. The callers were cleaned up a bit
and a few of them had channel.h removed since not needed.
diff --git a/src/cache.c b/src/cache.c
index 8a97f4e..80bc545 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -12,6 +12,7 @@
#include <haproxy/action-t.h>
#include <haproxy/api.h>
+#include <haproxy/channel.h>
#include <haproxy/cli.h>
#include <haproxy/http_htx.h>
#include <haproxy/http_rules.h>
@@ -23,7 +24,6 @@
#include <types/filters.h>
#include <types/proxy.h>
-#include <proto/channel.h>
#include <proto/proxy.h>
#include <proto/filters.h>
#include <proto/http_ana.h>