Small CS bug



>>>>> "Vadim" == Vadim V Zhytnikov <vvzhy@mail.ru> writes:

    Vadim> Hi!

    Vadim> I observe that expressions like log(0) or
    Vadim> plog(0) produce error messages with expression
    Vadim> printed in wrong  upper case.  Something like

    Vadim> PLOG(0) is undefined.

There are several hundred calls to merror with strings containing
uppercase characters.

Do we want to fix them all now?  I think some are ok, others should
clearly be downcased, and some are debatable.

Ray