This set of patches contains no functional changes, only debatable

	This set of patches contains no functional changes, only debatable
	minor stylistic ones.  Still, in order to prepare a patch between
	my local copy and the CVS version, I decided to submit the changes
	below.  Then, the patch will hopefully only contain relevant
	modifications :-)

	* eval.c (iqq): Added const specifier.

	* eval.c (scm_trampoline_0, scm_trampoline_1, scm_trampoline_2):
	Use NULL instead of 0 to indicate that a pointer is returned.
	Removed some misleading 'fall through' comments.

	* eval.c (scm_i_call_closure_0, call_closure_1, call_closure_2):
	Split up long expressions into smaller ones to be more debugging
	friendly.