REORG: include: move flt_http_comp.h to haproxy/

There was no type definition for this file which was moved as-is.
diff --git a/include/proto/flt_http_comp.h b/include/haproxy/flt_http_comp.h
similarity index 87%
rename from include/proto/flt_http_comp.h
rename to include/haproxy/flt_http_comp.h
index 6e95f14..4ba5ebb 100644
--- a/include/proto/flt_http_comp.h
+++ b/include/haproxy/flt_http_comp.h
@@ -1,5 +1,5 @@
 /*
- * include/proto/flt_http_comp.h
+ * include/haproxy/flt_http_comp.h
  * This file defines function prototypes for the compression filter.
  *
  * Copyright (C) 2015 Qualys Inc., Christopher Faulet <cfaulet@qualys.com>
@@ -18,11 +18,11 @@
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
-#ifndef _PROTO_FLT_HTTP_COMP_H
-#define _PROTO_FLT_HTTP_COMP_H
+#ifndef _HAPROXY_FLT_HTTP_COMP_H
+#define _HAPROXY_FLT_HTTP_COMP_H
 
 #include <types/proxy.h>
 
 int check_implicit_http_comp_flt(struct proxy *proxy);
 
-#endif // _PROTO_FLT_HTTP_COMP_H
+#endif // _HAPROXY_FLT_HTTP_COMP_H
diff --git a/src/filters.c b/src/filters.c
index 965b54f..bf9e6ed 100644
--- a/src/filters.c
+++ b/src/filters.c
@@ -14,6 +14,7 @@
 #include <haproxy/buf-t.h>
 #include <common/cfgparse.h>
 #include <haproxy/errors.h>
+#include <haproxy/flt_http_comp.h>
 #include <haproxy/http_htx.h>
 #include <haproxy/htx.h>
 #include <haproxy/namespace.h>
@@ -24,7 +25,6 @@
 
 #include <haproxy/compression.h>
 #include <proto/filters.h>
-#include <proto/flt_http_comp.h>
 #include <proto/http_ana.h>
 #include <proto/stream.h>
 #include <proto/stream_interface.h>