Lambaize $ and # in #{ ... #} to make Guile V2 happy.

Lambaize $ and # in #{ ... #} to make Guile V2 happy.

Unfortunately Guile V2 was not happy about the implementation of
closures around #{ ... #} relying on local-eval and
procedure-environment.  This patch abandons this approach and gets
back to a scheme similar like the old one, namely compiling the
expressions inside of #{ ... #} in advance.

Still, a few advantages over the old approach remain: the expressions
are placed into procedures and are evaluated/executed each at the
"proper" time rather than when #{ ... #} starts evaluating, so the
evaluation order is quite the same as outside of #{ ... #}.  Also no
artificial temporary variables/name-spaces are created.

Currently based off staging, hopefully soon off master.

[pkx166h, 2011-11-17 12:31:20]

passes make and make check - no reg test diffs.

James