classes: Update classes to match new bitbake class scope functionality

Move classes to classes-global or classes-recipe as appropriate to take
advantage of new bitbake functionality to check class scope/usage.

(From OE-Core rev: f5c128008365e141082c129417eb72d2751e8045)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-recipe/python3native.bbclass

@@ -0,0 +1,30 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+inherit python3-dir
+
+PYTHON="${STAGING_BINDIR_NATIVE}/python3-native/python3"
+EXTRANATIVEPATH += "python3-native"
+DEPENDS:append = " python3-native "
+
+# python-config and other scripts are using sysconfig modules
+# which we patch to access these variables
+export STAGING_INCDIR
+export STAGING_LIBDIR
+
+# Packages can use
+# find_package(PythonInterp REQUIRED)
+# find_package(PythonLibs REQUIRED)
+# which ends up using libs/includes from build host
+# Therefore pre-empt that effort
+export PYTHON_LIBRARY="${STAGING_LIBDIR}/lib${PYTHON_DIR}${PYTHON_ABI}.so"
+export PYTHON_INCLUDE_DIR="${STAGING_INCDIR}/${PYTHON_DIR}${PYTHON_ABI}"
+
+# suppress host user's site-packages dirs.
+export PYTHONNOUSERSITE = "1"
+
+# autoconf macros will use their internal default preference otherwise
+export PYTHON