Christopher Haster b7bd34f461 Restructured types to use a more flexible bit encoding ...

Recall that the 32-bit tag structure contains a 9-bit type. The type
structure then decomposes into a bit more information:
[---   9   ---]
[1|- 4 -|- 4 -]
 ^   ^     ^- specific type
 |   \------- subtype
 \----------- user bit

The main change is an observation from moving type info to the name tag
from the struct tag. Since we don't need the type info in the struct
tag, we can significantly simplify the type structure.

2018-10-15 18:34:26 -05:00

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