Fix do_configure to be able to regenerate configure files
Use cross libtool as installed by OE, as done in normal autotooled recipes
These changes help in invoking the libtool with proper tags for C
and C++ compiler and linker invocation and not use same tag across all
different invocations
Fixes errors like
libtool: compile: unable to infer tagged configuration
libtool: compile: specify a tag with `--tag'
Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
