* optimization: much faster memory allocation on x86-64
* optimization: faster garbage collections (latency and throughput)
on gencgc
+ * optimization: faster bignum subtraction and division on x86 and x86-64
+ (thanks to Lutz Euler)
changes in sbcl-0.9.6 relative to sbcl-0.9.5:
* bug fix: add a workaround to SBCL looping infinitely at startup on