An easy way to copy lisp strings to malloc'ed memory.
I can't believe we didn't have this before. ...just seems
insane. I keep expecting to find a nice way to do this
squirreled away somewhere in SB-ALIEN. Here's hoping I won't
embarrass myself by finding one.
Also fix the OAOOM in MAKE-ALIEN and FREE-ALIEN documentation: make
the docstrings the canonical versions, and include them in the