Hello!

I merged that branch in ‘master’.

... and soon after I noticed this glitch with ‘SCM_DEFINE’: when
‘SCM_SUPPORT_STATIC_ALLOCATION’ is defined, it requires a previous C
declaration of the subr being defined.  For instance:

  SCM_DEFINE (foo, "foo", 1, 0, 0, (SCM x), "") { ... }

must now be preceded by:

  extern SCM foo (SCM);

This is not a problem in Guile core where we compile with
‘-Wmissing-prototypes’ and provide public declarations for all
‘SCM_DEFINE’d functions, but it may be a problem in projects that don’t.

This is easily remedied this way: