binconfig: mangle ${base_libdir}

Some recipes are installing libraries into ${base_libdir} (typically /lib) and
also use a foo-config binary to identify compile paths, for example
libusb-compat.  Without mangling ${base_libdir} the ${base_libdir} path is
passed to the compiler, where it looks like a host path and results in
compile-host-path QA errors.

(From OE-Core master rev: ccd9abdccb84d713427541b6ee29a0e217360e74)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
cpan-base: Add vardepvalue to get_perl_version function

* without this bitbake -S perf shows following error:
  ERROR: Bitbake's cached basehash does not match the one we just generated
    (/OE/oe-core/meta/recipes-kernel/perf/perf.bb.do_package)!
  if you run it twice, once without perl in sysroot and once with perl
  already built

(From OE-Core master rev: f31f6a70ec24e8c9515d69c5092e15effc5e7d4d)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>