2afeb1ca38
Allows character literals to used to assign values to non-character variables in the same way that Hollerith constants are used. In addition character literals can be used in data statements just like Hollerith constants. Warnings of such use are output to discourage this usage as it is a non-standard legacy feature and must be explicitly enabled. Enabled by -fdec and -fdec-char-conversions. Co-Authored-By: Jim MacArthur <jim.macarthur@codethink.co.uk> From-SVN: r277975
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