Enable build without atoll (e.g old AIX flavours)

Author: kaplanlior

ext/date/php_date.c

@@ -50,7 +50,11 @@ static inline long long php_date_llabs( long long i ) { return i >= 0 ? i : -i;
 		int st = snprintf(s, len, "%lld", i); \
 		s[st] = '\0'; \
 	} while (0);
+#ifdef HAVE_ATOLL
 # define DATE_A64I(i, s) i = atoll(s)
+#else
+# define DATE_A64I(i, s) i = strtoll(s, NULL, 10)
+#endif
 #endif
 
 /* {{{ arginfo */