Removing the requirement of "aligned" attribute support.
Removing the requirement of "aligned" attribute support.

Before 0a2a0b5a74f4, the address of values used in runtime had to be the
multiple of 16, because the address of a variable was used as its VM
index. The first 4 bits of an index signified the scope of a varible.

This is no longer the case, after 0a2a0b5a74f4 the address of a variable
is never used as its VM index.

nginx/njs,nginx/njs,nginx/njs,nginx/njs,nginx/njs,nginx/njs