doc vm: NAMED assign named args before a CALL

See 6bb731bfb7b7520cbd18efafe643
doc: clarify OP_GLOBALS opcode
INTERNALS.md improve markdown, add lua vm design blurps

mention Limbo/Inferno/Dis as major lua VM design father, which was
the fast, small, register based Lucent competitor to Suns java.
E.g. the 3reg op, the operand sizes.

Fixed conflicts:
	INTERNALS.md