Revert "Previous encumberance state moved to decl.c."

This reverts commit 4e774197a6.

include/decl.h

@@ -437,9 +437,6 @@ struct early_opt {
     boolean valallowed;
 };
 
-/* encumbrance */
-E int oldcap;
-
 #undef E
 
 #endif /* DECL_H */

src/decl.c

@@ -214,9 +214,6 @@ NEARDATA struct monst *migrating_mons = (struct monst *) 0;
 
 NEARDATA struct mvitals mvitals[NUMMONS];
 
-/* originally from pickup.c */
-int oldcap = 0; /* encumbrance */
-
 NEARDATA struct c_color_names c_color_names = {
     "black",  "amber", "golden", "light blue", "red",   "green",
     "silver", "blue",  "purple", "white",      "orange"
@@ -528,8 +525,6 @@ decl_early_init()
     ZERO(ubirthday);
     ZERO(urealtime);
 
-    ZERO(oldcap);
-
     ZEROARRAY(lastseentyp);
 
     ZEROPTR(invent);

src/pickup.c

@@ -1556,6 +1556,7 @@ struct obj *otmp;
 int
 encumber_msg()
 {
+    static int oldcap = UNENCUMBERED;
     int newcap = near_capacity();
 
     if (oldcap < newcap) {