CLEANUP: include: tree-wide alphabetical sort of include files

This patch fixes all the leftovers from the include cleanup campaign. There
were not that many (~400 entries in ~150 files) but it was definitely worth
doing it as it revealed a few duplicates.
diff --git a/src/mux_fcgi.c b/src/mux_fcgi.c
index 03e5b9c..b116121 100644
--- a/src/mux_fcgi.c
+++ b/src/mux_fcgi.c
@@ -10,17 +10,18 @@
  *
  */
 
+#include <import/ist.h>
+
 #include <haproxy/api.h>
 #include <haproxy/cfgparse.h>
 #include <haproxy/connection.h>
 #include <haproxy/errors.h>
-#include <haproxy/fcgi.h>
 #include <haproxy/fcgi-app.h>
+#include <haproxy/fcgi.h>
 #include <haproxy/h1.h>
 #include <haproxy/h1_htx.h>
 #include <haproxy/http_htx.h>
 #include <haproxy/htx.h>
-#include <import/ist.h>
 #include <haproxy/list.h>
 #include <haproxy/log.h>
 #include <haproxy/net_helper.h>
@@ -32,6 +33,7 @@
 #include <haproxy/stream_interface.h>
 #include <haproxy/trace.h>
 
+
 /* FCGI Connection flags (32 bits) */
 #define FCGI_CF_NONE           0x00000000