getty/gidl @ f0bb1c37687844b6e89c230276883a54f1c66fbf

Pat Hickey f0bb1c3768 gidl parser: don't make builtins part of type env, improved error msgs		10 lat temu
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Gidl	f0bb1c3768 gidl parser: don't make builtins part of type env, improved error msgs	10 lat temu
Gidl.hs	e37e8d29e4 Much improved error messages; added pretty-printer	10 lat temu