REORG: check: move the e-mail alerting code to mailers.c
check.c is one of the largest file and contains too many things. The
e-mail alerting code is stored there while nothing is in mailers.c.
Let's move this code out. That's only 4% of the code but a good start.
In order to do so, a few tcp-check functions had to be exported.
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 0bb4f2b..fa85401 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -57,7 +57,7 @@
#include <haproxy/lb_map.h>
#include <haproxy/listener.h>
#include <haproxy/log.h>
-#include <haproxy/mailers-t.h>
+#include <haproxy/mailers.h>
#include <haproxy/obj_type-t.h>
#include <haproxy/peers-t.h>
#include <haproxy/pool.h>