Add workaround for slurm.h inclusion of List datatype

Later Slurm versions export @dun's List datatype verbatim in their
public header file. Unfortunately, this breaks any code that uses
list.h and also tries to include slurm.h.

The only viable workaround for now seems to be setting the
__list_datatypes_defined preprocessor define where needed to avoid
the slurm.h header redefining the List type. Luckily, this seems
to be only in one spot for now.

auto-affinity.c

@@ -33,10 +33,12 @@
 #define __USE_GNU
 #include <sched.h>
 
+/* Include list.h before slurm.h since slurm header stole our List type */
+#include "lib/list.h"
+
 #include <slurm/slurm.h>
 #include <slurm/spank.h>
 
-#include "lib/list.h"
 #include "lib/split.h"
 #include "lib/fd.h"
 

lib/list.h

@@ -25,7 +25,8 @@
 
 #ifndef LSD_LIST_H
 #define LSD_LIST_H
-
+/*  Depressing workaround for slurm.h inclusion of our List typedef */
+#define __list_datatypes_defined
 
 /***********
  *  Notes  *