in multithreaded application code.
* optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
platforms. (thanks to James Anderson for the optimization hint)
+ * enhancement: XREF information is now collected to references made
+ to global variables using SYMBOL-VALUE with a constant argument.
+ * bug fix: dead unbound variable references now signal an error.
+ (reported by Marco Monteiro)
* bug fix: / with an unused value was being deleted in safe code.
(thanks to Marco Monteiro and Kevin Reid)
* bug fix: number of characters that can be written onto a single