The "handlers" on the interpreter stack is sometimes treated as
host pointers and sometimes treated as i64 values. It's quite broken
for targets where pointers are not 64-bit.

This commit makes them host pointers consistently. (at least for
32-bit and 64-bit pointers. We don't support other pointer
sizes anyway.)

Fixes #3110

Clear some compile warnings and fix undefined reference error for symbol ffs
in Windows platform.

Error was reported when building jetstream benchmark with emsdk:
```
clang: error: unsupported option '-msse2' for target 'wasm32-wasi'
```

Error was reported when building bwa workload:
```
fatal: reference is not a tree: 139f68fc4c3747813783a488aef2adc86626b01b
```

Add three APIs:
- wasm_runtime_get_file_package_version
- wasm_runtime_get_module_package_version
- wasm_runtime_get_current_package_version

Tiny typo fix: from `.devontainer` to `.devcontainer`.