python3-tornado: Upgrade 6.4 -> 6.4.2

Changelog:
==========
https://github.com/tornadoweb/tornado/releases/tag/v6.4.2
https://github.com/tornadoweb/tornado/releases/tag/v6.4.1

Switch to python_setuptools_build_meta -
e71fb6e616

Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>

meta-python/recipes-devtools/python/python3-tornado_6.4.2.bb

@@ -0,0 +1,41 @@
+SUMMARY  = "Tornado is an open source version of the scalable, non-blocking web server and tools that power FriendFeed."
+DESCRIPTION = "Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. \
+By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long \
+polling, WebSockets, and other applications that require a long-lived connection to each user."
+HOMEPAGE = "http://www.tornadoweb.org/en/stable/"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"
+
+SRC_URI[sha256sum] = "92bad5b4746e9879fd7bf1eb21dce4e3fc5128d71601f80005afa39237ad620b"
+
+inherit pypi python_setuptools_build_meta
+
+# Requires _compression which is currently located in misc
+RDEPENDS:${PN} += " \
+    python3-asyncio \
+    python3-certifi \
+    python3-compression \
+    python3-ctypes \
+    python3-email \
+    python3-html \
+    python3-json \
+    python3-misc \
+    python3-multiprocessing \
+    python3-numbers \
+    python3-pkgutil \
+    python3-pycurl \
+    python3-threading \
+    python3-unittest \
+"
+
+RDEPENDS:${PN}-test += "python3-unittest"
+
+PACKAGES =+ "\
+    ${PN}-test \
+"
+
+FILES:${PN}-test = " \
+    ${PYTHON_SITEPACKAGES_DIR}/*/test \
+"
+
+BBCLASSEXTEND  += "native nativesdk"