* Correct detection of following cases.
non-editline/readline, editline/non-readline, and editline/readline.
* If builtin editline has header files in include/editline, create
include/readline/* symlinks.
* Fix PR pkg/48062 with above fixes. Confirmed on Ubuntu Linux/amd64 13.04.
Many thanks for obache@.
* READLINE_DEFAULT is depends on builtin editline/readline type if possible.
* _READLINE_ACCEPTED is always "editline readline", both are provided.
Tested on OmniOS (builtin readline-6.2; with some modifications) and NetBSD.
XXX If buitin readline is incompatible, READLINE_DEFAULT is set as readline.
According to devel/readline/builtin.mk, SunOS, Darwin, and Interix's
readline is incompatible with GNU readline.
This behavior should be fixed.
With this change, .include "../../devel/readline/buildlink3.mk" with
USE_GNU_READLINE=yes should be replaced with
.include "../../devel/readline/buildlink3.mk",
and .include "../../devel/readline/buildlink3.mk" without USE_GNU_READLINE
should be replaced .include "../../mk/readline.buildlink3.mk".
USE_GNU_READLINE is removed.
