REORG: include: move checks.h to haproxy/check{,-t}.h
All includes that were not absolutely necessary were removed because
checks.h happens to very often be part of dependency loops. A warning
was added about this in check-t.h. The fields, enums and structs were
a bit tidied because it's particularly tedious to find anything there.
It would make sense to split this in two or more files (at least
extract tcp-checks).
The file was renamed to the singular because it was one of the rare
exceptions to have an "s" appended to its name compared to the struct
name.
diff --git a/src/backend.c b/src/backend.c
index 4a1b050..8e8618a 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -20,6 +20,7 @@
#include <sys/types.h>
#include <haproxy/api.h>
+#include <haproxy/check.h>
#include <haproxy/frontend.h>
#include <haproxy/hash.h>
#include <haproxy/http.h>
@@ -42,7 +43,6 @@
#include <haproxy/arg.h>
#include <proto/backend.h>
#include <proto/channel.h>
-#include <proto/checks.h>
#include <proto/lb_map.h>
#include <proto/log.h>
#include <haproxy/protocol.h>