#350 rexxref 3.4 ::CONSTANT Note 2 incomplete

[Josep Maria Blasco]

Note 2 says

For a floating ::CONSTANT directive the constant value must be a single literal string, or a symbol
that is taken as a constant. An expression enclosed in parentheses is not allowed.

but it should say

For a floating ::CONSTANT directive the constant value must be a single literal string, a symbol
that is taken as a constant, or a valid number optionally preceded by "-" or "+". An expression enclosed in parentheses is not allowed.

[Josep Maria Blasco]

Uploading a patch that fixes this bug