#!fold-case only folds one expression

[Takashi Kato]

Run this;

(print 'ABC)
(print 'ABC)
(print 'ΓΛΏΣΣΑ)
(print 'ΜΈΛΟΣ)

should print

abc
abc
γλώσσα
μέλοσ

[Takashi Kato]

Modified load to preserve flag for #!fold-case and #!no-fold-case (Fixes #56)

→ <<cset 52330590db4e>>

[Takashi Kato]

Modified setting case insensitive flag when explicitly specified (Fixes #56) Removed invalid presavation for read context. Exposed port-case-insensitive? procedure.

→ <<cset a2a3f09f984f>>