[Chicken-hackers] [PATCH][5] Make `define-constant` support singly-quoted symbols

[Evan Hanson]

One for chicken-5. See the commit message for an explanation.

A case *could* be made for the current behaviour as a way to do
compile-time variable substitution, but IMO `define-constant` is the
wrong way to support such a feature and as it stands it's impossible to
define a plain symbol as a constant.

Cheers,

Evan