Data exception for fetching above 127 ECEs

The POP states:

During expansion of each character symbol, either
the characters in the symbol or the dictionary entries
representing characters of the symbol are counted,
and a data exception is recognized if this count
becomes too large. If the characters in the symbol
are counted, the count can reach at least 260 without
the exception being recognized. If the dictionary
entries representing characters of the symbol are
counted, the count can reach at least 127 without the
exception being recognized.

Hercules CMPSC was only checking for characters and with this patch it will check both. A data exception is recognized on expanding above 260 characters OR fetching above expansion character entry 127.

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