Add x86 assembly implementation for use with CodeWarrior. Commented out initially until we can get more widespread testing for verification of performance improvements (if any).

[SVN r28422]

libs/smart_ptr

@@ -1 +1 @@
-Subproject commit 4e4ec29fc983a04de0915fc39eeefef3edb47f82
+Subproject commit 8bacee46ebcc279f2b7bf228e9c7c8ca4d663d72