Replace slow generic sha3 implementation by https://github.com/gvanas/KeccakCodePackage

Replace slow generic sha3 implementation by https://github.com/gvanas/KeccakCodePackage

Fix hash_copy() tests by using correct size for sha3 context

sync config.w32 with with new sha3 files

Move dependency on KeccakHash.h to hash_sha3.c so we do not rely on it to install php_hash_sha3.h

Allocate memory for KeccacInstance in hash_sha3.c so header files do not need to know about implementation details while keeping API backward compatible to original sha3 implementation

Fix memory leak because hash_copy is called after init which already allocates the hashinstance