Replace 'suseconds_t' with 'long'

suseconds_t isn't always defined on some systems, but all possible
values are guaranteed to fit into a long, so use that.

src/calc.c

@@ -73,7 +73,7 @@ char errmsg[128];        /* error message, when err=1 */
 struct dir *root;        /* root directory struct we're calculating */
 struct dir *orig;        /* original directory, when recalculating */
 dev_t curdev;            /* current device we're calculating on */
-suseconds_t lastupdate;  /* time of the last screen update */
+long lastupdate;         /* time of the last screen update */
 int anpos;               /* position of the animation string */
 
 

src/delete.c

@@ -41,7 +41,7 @@
 
 int delete_delay = 100;
 
-suseconds_t lastupdate;
+long lastupdate;
 struct dir *root, *nextsel;
 char noconfirm = 0,
      ignoreerr = 0,