native: Use a native site file and ensure the correct sed is used

native recipes were not using the site files. There are some things we need
to correct such as not using the path to sed-native. This allows us
to deploy settings globally for all recipes rather than hacking around
then in individual recipes as libtool-native used to for sed.

This fixes a regression introduced by
http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=32edeb391f2107bb66b361cdcd4b8d4447731c33

(From OE-Core rev: db2eb3258844458569b7d4e6ed82c345858a3b99)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/native.bbclass

@@ -54,7 +54,7 @@ DEPENDS_GETTEXT = "gettext-native"
 PTEST_ENABLED = "0"
 
 # Don't use site files for native builds
-export CONFIG_SITE = ""
+export CONFIG_SITE = "${COREBASE}/meta/site/native"
 
 # set the compiler as well. It could have been set to something else
 export CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_ARCH}"

meta/site/native

@@ -0,0 +1 @@
+ac_cv_path_SED=sed