Reworked `SimulatedClassPool >> #associationAt:ifAbsent:` to throw an error
...if there's no such class variable. This makes it behave more like
dictionary / pool.
@REM -------
@REM make using Microsoft Visual C compiler
@REM type vcmake, and wait...
@REM do not edit - automatically generated from ProjectDefinition
@REM -------
@if not defined VSINSTALLDIR (
pushd ..\rules
call vcsetup.bat
popd
)
@SET DEFINES=
make.exe -N -f bc.mak -DUSEVC=1 %DEFINES% %*