eric/m-code-64: 64 bits m-code virtual machine with interpreter and conrsion program @ d544a9f9436c2c8d7c7ca5b86e7a7b75ee4bef1b

Eric Streit b0c26bb9f4 step2.1: rename 64-bit images .MCD -> .MC4 per spec sections 8 and 14		1 月之前
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m-code-summary-64.md	83b9f7c6b2 second commit	1 月之前
m-code-summary.md	83b9f7c6b2 second commit	1 月之前
mc64-spec.md	b0c26bb9f4 step2.1: rename 64-bit images .MCD -> .MC4 per spec sections 8 and 14	1 月之前
session-summary.md	b0c26bb9f4 step2.1: rename 64-bit images .MCD -> .MC4 per spec sections 8 and 14	1 月之前