[patch/rfc?] Less ``info register''

[Andrew Cagney]

Hello,

Following on from ElenaZ's patch, this modifies print_registers_info() 
so that it only prints both natural and hex forms of registers when the 
register is an int or float.

This means that any register, with a composite type, is printed in just hex.

For instance:

mxcsr          {mxcsr = 0x1f80, bits = {FZ = 0x0, RC = 0x0, PM = 0x1,
     UM = 0x1, OM = 0x1, ZM = 0x1, DM = 0x1, IM = 0x1, PE = 0x0, UE = 0x0,
     OE = 0x0, ZE = 0x0, DE = 0x0, IE = 0x0}}

Another variation would be to test for a register with a union, vector, 
or struct type.

Or just customize the mxcsr register display.

thoughts?
Andrew
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