removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
if no major problems are found then it is likely that they will be
compiled in unconditionally.
+ * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
+ unsupported operators. To load a shared library into SBCL, use
+ SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared object file,
+ link it into a shared library outside of SBCL and load it using
+ SB-ALIEN:LOAD-SHARED-OBJECT.
* minor incompatible change: as threatened around sbcl-0.8.0, the
home package of MOP-related symbols is now SB-MOP, not SB-PCL.
The symbols are also exported from SB-PCL for backwards