Fixed typo in OpenAL handling.
[GhcLibsWithOpenAL=yes])
# This is silly! Alas, "YES" and "NO" are currently our standard...
-GhcLibsWithOpenAL=`echo $GhcLibsWithOpenGL | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+GhcLibsWithOpenAL=`echo $GhcLibsWithOpenAL | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
AC_SUBST([GhcLibsWithOpenAL])