[rfc] ``pc'' -> resume_addr?

[Andrew Cagney]

Hello,

GDB, in a number of places, refers to the ``pc'' - PC_REGNUM, frame->pc, 
  read_pc(), write_pc(), ...

I think this name choice was unfortunate.  It is too easy for a 
developer to confuse ``pc'' with the hardware ``pc''.

With this in mind, I'd like to propose a GDBspeak ``resume_addr''.  It 
is the address of the first instruction that will be executed when the 
target resumes.

thoughts?  better names?
Andrew