Include config.h in cmdlang to avoid gethostbyname

cmdlang.c uses a configure macro to determine getaddrinfo support.

Without the macro defined, it uses gethostbyname instead of getaddrinfo.
This was actually happening erroneously, because the code did not
include config.h. Fix that.

Avoids one rpminspect/rpmdiff warning.

Related: rhbz#2044062

OpenIPMI.spec

@@ -12,6 +12,7 @@ Source1:    openipmi.sysconf
 Source2:    openipmi-helper
 Source3:    ipmi.service
 Patch1:     0001-man.patch
+Patch2:     include-config-h-cmdlang.patch
 
 BuildRequires: make
 BuildRequires:    gdbm-devel swig glib2-devel net-snmp-devel ncurses-devel

include-config-h-cmdlang.patch

@@ -0,0 +1,12 @@
+diff -up OpenIPMI-2.0.32/cmdlang/cmdlang.c~ OpenIPMI-2.0.32/cmdlang/cmdlang.c
+--- OpenIPMI-2.0.32/cmdlang/cmdlang.c~	2021-01-22 19:51:28.000000000 +0100
++++ OpenIPMI-2.0.32/cmdlang/cmdlang.c	2022-01-28 11:55:42.375470392 +0100
+@@ -32,6 +32,8 @@
+  */
+ 
+ 
++#include <config.h>
++
+ #include <errno.h>
+ #include <string.h>
+ #include <ctype.h>