Fix some compile warnings and typos (#3854)

- Clear some compile warnings
- Fix some typos
- Fix llvm LICENSE link error
- Remove unused aot file and binarydump bin
- Add checks when loading AOT exports

core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c

@@ -1022,8 +1022,8 @@ execute_interruptible_poll_oneoff(
     uint32 i;
 
     const __wasi_timestamp_t timeout = get_timeout_for_poll_oneoff(
-                                 in, nsubscriptions),
-                             time_quant = 1e9;
+                                 in, (uint32)nsubscriptions),
+                             time_quant = (__wasi_timestamp_t)1e9;
     const uint64 size_to_copy =
         nsubscriptions * (uint64)sizeof(wasi_subscription_t);
     __wasi_subscription_t *in_copy = NULL;
@@ -1034,12 +1034,13 @@ execute_interruptible_poll_oneoff(
         return __WASI_ENOMEM;
     }
 
-    bh_memcpy_s(in_copy, size_to_copy, in, size_to_copy);
+    bh_memcpy_s(in_copy, (uint32)size_to_copy, in, (uint32)size_to_copy);
 
     while (timeout == (__wasi_timestamp_t)-1 || elapsed <= timeout) {
         /* update timeout for clock subscription events */
         update_clock_subscription_data(
-            in_copy, nsubscriptions, min_uint64(time_quant, timeout - elapsed));
+            in_copy, (uint32)nsubscriptions,
+            min_uint64(time_quant, timeout - elapsed));
         err = wasmtime_ssp_poll_oneoff(exec_env, curfds, in_copy, out,
                                        nsubscriptions, nevents);
         elapsed += time_quant;

core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c

@@ -3130,7 +3130,7 @@ compare_address(const struct addr_pool *addr_pool_entry,
         }
         addr_size = 16;
     }
-    max_addr_mask = addr_size * 8;
+    max_addr_mask = (uint8)(addr_size * 8);
 
     /* IPv4 0.0.0.0 or IPv6 :: means any address */
     if (basebuf[0] == 0 && !memcmp(basebuf, basebuf + 1, addr_size - 1)) {