Macros that are defined under config but not used anywhere.

[Jim Wilson]

Kazu Hirata wrote:
> ia64:
> REG_GP

This one is unnecessary.

> UNW_FLAG_MASK
> UNW_FLAG_OSMASK
> UNW_VER

These are all defined for completeness.  An unwind header has 6 fields, 
and we define macros for extracting all of them, even though currently 
we only use 3 of the macros.  If we delete these, then we lose useful 
info, the size and position and name of the 3 currently unused fields.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com