fixes a little issue with some header files

src/xt_redist_collection_static.h

-#ifndef XT_REDIST_COLLECTION_H
-#define XT_REDIST_COLLECTION_H
+#ifndef XT_REDIST_COLLECTION_STATIC_H
+#define XT_REDIST_COLLECTION_STATIC_H
 
 #include "xt_redist.h"
 
@@ -21,4 +21,4 @@ Xt_redist xt_redist_collection_static_new(Xt_redist * redists, unsigned num_redi
                                           MPI_Aint * src_displacements,
                                           MPI_Aint * dst_displacements, MPI_Comm comm);
 
-#endif // XT_REDIST_COLLECTION_H
+#endif // XT_REDIST_COLLECTION_STATIC_H

src/xt_xmap_dist_dir.h

-#ifndef XT_XMAP_ALL2ALL_H
-#define XT_XMAP_ALL2ALL_H
+#ifndef XT_XMAP_DIST_DIR_H
+#define XT_XMAP_DIST_DIR_H
 
 #include "yaxt.h"
 
@@ -17,4 +17,4 @@
 Xt_xmap xt_xmap_dist_dir_new(Xt_idxlist src_idxlist, Xt_idxlist dst_idxlist,
                              MPI_Comm comm);
 
-#endif // XT_XMAP_ALL2ALL_H
+#endif // XT_XMAP_DIST_DIR_H

src/xt_xmap_intersection.h

-#ifndef XT_XMAP_ALL2ALL_H
-#define XT_XMAP_ALL2ALL_H
+#ifndef XT_XMAP_INTERSECTION_H
+#define XT_XMAP_INTERSECTION_H
 
 #include "yaxt.h"
 
@@ -30,4 +30,4 @@ Xt_xmap xt_xmap_intersection_new(Xt_idxlist * src_intersections, int * src_ranks
                                  Xt_idxlist src_idxlist, Xt_idxlist dst_idxlist,
                                  MPI_Comm comm);
 
-#endif // XT_XMAP_ALL2ALL_H
+#endif // XT_XMAP_INTERSECTION_H