to global variables using SYMBOL-VALUE and a constant argument.
* enhancement: SIGINT now causes a specific condition
SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
+ * bug fix: adding and removing fd-handlers is now thread-safe.
* bug fix: inlined calls to C now ensure 16byte stack alignment on
x86/Darwin.
* bug fix: bad type declaration in the CLOS implementation has