Extend support for Socket API:

• Implement IPv6 (along with IPv4) for all the socket-related operations
• Enable resolving host name IP address by adding a host call to WASI Implement a security feature for controlling what domains are allowed to be resolved
• Allow configuring socket options by adding host calls to WASI for setting and reading the options
• Enable connection-less communication between hosts by adding host calls to WASI for sending data directly to a given address and receiving messages from a specific address
• Fix verification of the address in the address pool
• Add more samples and update the documents

Implement SGX IPFS as POSIX backend for file interaction for linux-sgx

• Integrates the Intel SGX feature called Intel Protection File System Library (IPFS) into the runtime to create, operate and delete files inside the enclave, while guaranteeing the confidentiality and integrity of the data persisted

Make libc-builtin buffered printf be a common feature Enable passing through arguments for build_llvm.sh Update __wasi_sock_accept signature to match wasi_snapshot_preview1 Enable build wasi_socket_ext.c with both clang and clang++ Add check for code section size, fix interpreter float operations Prevent an already detached thread from being detached again for thread manager Fix several issues related to AOT debug and update source_debugging.md Fix Windows/MSVC build issues and compile warnings Fix wasm loader: function sub local count can be 0 Fix crash in dumping call stack when the AOT file doesn't contain custom name section Fix Dockerfile lint errors and suppress hadolint warnings for pinning versions part Fix Fast JIT issues reported by instrument test Fix link error for ESP-IDF 4.4.2 Fix syntax errors and undefined names in Python code Fix issues reported by Coverity Fix Go binding build error Fix a wrongly named parameter and enhance the docs in bh_hashmap.h