Fix build under LLVM15

Fix many -Wint-conversion errors such as the example below, including
an aso atomics error.

connect.c:87:12: error: incompatible pointer to integer conversion initializing 'LONG' (aka 'int') with an expression of type 'void *' [-Wint-conversion]
   DB_ADDR mdba = NULL;   /* db address of current member record */
           ^      ~~~~

cde/programs/dtksh/ksh93/src/lib/libast/aso/aso.c

@@ -835,7 +835,7 @@ asocasptr(void volatile* p, void* o, void* n)
 
 #if defined(_aso_casptr)
 	if (!state.lockf)
-		return _aso_casptr((void**)p, o, n);
+		return _aso_cas64((void**)p, o, n);
 #endif
 	k = lock(state.data, 0, p);
 	if (*(void* volatile*)p == o)