Cleanup of config/includes.

Remove a use of AH_BOTTOM from configure.ac. This macro is used by
autoheader to add '#include' of some include file to the end of
config.h.in and then to config.h. OpenOCD can be built with a custom
config.h, so it's preferable to move these '#include' statement directly
in the C files that need them dropping this unneeded dependency.

It also causes problems when I want to use the gnulib library (which
comes with its own Makefile, and does not have the same include path as
the top-level Makefile).

So this change touches a lot of files, but is actually really simple. It
does not affect functionality at all.

Change-Id: I52c70bf15eb2edc1dd10e0fde23b2bcd4caec000
Signed-off-by: Tim Newsome <tim@sifive.com>
Reviewed-on: http://openocd.zylin.com/6171
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

src/server/server.c

@@ -33,6 +33,7 @@
 #include "openocd.h"
 #include "tcl_server.h"
 #include "telnet_server.h"
+#include "time_support.h"
 
 #include <signal.h>
 

src/server/server.h

@@ -30,6 +30,7 @@
 #endif
 
 #include <helper/log.h>
+#include <helper/replacements.h>
 
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>