function with dynamic-extent &rest list.
* bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
boa-construtors can be used to initialized structure slots.
+ * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
+ (lp#795705, regression)
changes in sbcl-1.0.49 relative to sbcl-1.0.48:
* minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables