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macro.

immiediate number. Richards benchmark runs.

argument
we need to know whether a block is an exception block by looking at all
the exceptional clauses.

This reverts commit 54ce8e1c.

replacing most uses of HashMap with LinkedHashMap. This will reduce (if not eliminate) undeterminism in the compilation.
Copied LinkedHashMap implementation to local so that I can implement encode/decode and other necessary methods

1. see vm/vm_options.rs for usage and default values
2. added mu_fastimpl_new_with_opts under vm/api/api_impl/muvm.rs

currently only translate one old test into new one with macros,
the macro set is going to grow as it needs to. The macros are
located under tests. atm I do not intend to expose it for clients.

Note: made two places in api implementation as unimplemented as
the instruction/type chnaged.