rrthomas/zee — pull request #4 by gvvaughan (2014-01-21 21:09:15+00:00)
Title: astr: fix alien.default.memchr ref outside pcall

Unfortunately, any reference to alien.default.memrchr throws an
error as it is parsed on machines where the memrchr function is
not available.
* zee/astr.lua (have_memrchr, rchr): Wrap the entire memrchr
based rchr function in pcall(load string()) so we can catch
the parse time error.