[BUG][FIX] Can't compile interp.c on Acorn and MacOS 10.2

As discussed earlier, interp.c as generated contains definitions of 
variables named "bool," which are treated in some systems, such as 
Acorn and MacOS 10.2, as a type or reserved word.  The attached 
changeset replaces that code with defintiions of variables instead 
named "aBool."

Before adding this to the release, will someone check to make sure that 
the updated versions of these methods were created from the most 
current?  I was using a fairly haggard and regularly munged image, so I 
couldn't be sure.  Still, these look like the types of routines that 
aren't changed too often, so it should be ok.

--------
'From Squeak3.3alpha of 12 January 2002 [latest update: #4934] on 31 
August 2002 at 1:10:56 pm'!
"Change Set:               fixBoolDeclarations
Date:                   31 August 2002
Author:                 acg

Generated VM interp.c files contained definitions of the form 'int 
bool;' in various portions of the interpreter.  Because some compilers 
and standard libraries define 'bool' as a class, the generated code is 
uncompilable without modification.  This changeset simply changes those 
temporary variables named 'bool' to temporary variables named 'aBool,' 
resulting in versions of interp.c that appear to work correctly for the 
MacOS X and Acorn ports."!
----------

fixBoolDeclarations.1.cs
Description: application/text