python-yaml: provide both python2 and python3 package

Further the recipe is simplified by using the pypi and setuptools class.
The custom setup.py is no onger necessary.

Signed-off-by: Pascal Bach <pascal.bach@nextrem.ch>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-python/recipes-devtools/python/python-pyyaml_3.12.bb

@@ -1,24 +1,2 @@
-SUMMARY = "Python support for YAML"
-HOMEPAGE = "http://www.pyyaml.org"
-SECTION = "devel/python"
-LICENSE = "MIT"
-LIC_FILES_CHKSUM = "file://LICENSE;md5=6015f088759b10e0bc2bf64898d4ae17"
-DEPENDS = "libyaml python-cython-native"
-
-SRC_URI = "http://pyyaml.org/download/pyyaml/PyYAML-${PV}.tar.gz \
-           file://setup.py \
-"
-
-SRC_URI[md5sum] = "4c129761b661d181ebf7ff4eb2d79950"
-SRC_URI[sha256sum] = "592766c6303207a20efc445587778322d7f73b161bd994f227adaa341ba212ab"
-
-S = "${WORKDIR}/PyYAML-${PV}"
-
-inherit distutils
-
-do_configure_prepend() {
-    # upstream setup.py overcomplicated, use ours
-    install -m 0644 ${WORKDIR}/setup.py ${S}
-}
-
-BBCLASSEXTEND = "native nativesdk"
+inherit setuptools
+require python-pyyaml.inc