dev-python: merge most python2 and python3 recipes.

* adjust recipes depending on these, ie python_dateutil=>dateutil_python.
* switch architectures to any for relevant python recipes.
* bump versions for retext, argh, beautifulsoup, cssselect, dateutil,
docutils, fonttools, html2text, httplib2, lxml, mechanize, mock, paramiko,
pillow, pip, pygments, requests, twisted, urllib3, zope_interface.

dev-python/lxml/lxml-3.7.2.recipe

@@ -0,0 +1,78 @@
+SUMMARY="A Pythonic binding for the libxml2 and libxslt libraries"
+DESCRIPTION="	The lxml XML toolkit is unique in that it combines the speed \
+and XML feature completeness of the libxml2 and libxslt libraries with the \
+simplicity of a native Python API, mostly compatible but superior to the \
+well-known ElementTree API.
+The latest release works with all CPython versions from 2.4 to 3.3."
+HOMEPAGE="http://lxml.de/
+	http://pypi.python.org/pypi/lxml/"
+COPYRIGHT="2003-2010 Gustavo Niemeyer"
+#FIXME: check exact license
+#gentoo says: LICENSE="BSD ElementTree GPL-2 PSF-2"
+LICENSE="GNU GPL v2"
+REVISION="1"
+SOURCE_URI="http://lxml.de/files/lxml-$portVersion.tgz"
+CHECKSUM_SHA256="59d9176360dbc3919e9d4bfca85c1ca64ab4f4ee00e6f119d7150ba887e3410a"
+
+ARCHITECTURES="x86 x86_gcc2 x86_64"
+
+PROVIDES="
+	$portName = $portVersion
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	devel:libxml2
+	devel:libxslt
+	devel:libz
+	"
+BUILD_PREREQUIRES="
+	cmd:gcc
+	cmd:ld
+	"
+PYTHON_PACKAGES=(python python3)
+PYTHON_VERSIONS=(2.7 3.6)
+for i in "${!PYTHON_PACKAGES[@]}"; do
+pythonPackage=${PYTHON_PACKAGES[i]}
+pythonVersion=${PYTHON_VERSIONS[$i]}
+eval "PROVIDES_${pythonPackage}=\"\
+	${portName}_$pythonPackage = $portVersion\
+	\"; \
+REQUIRES_$pythonPackage=\"\
+	haiku\n\
+	lib:libxml2\n\
+	lib:libxslt\n\
+	lib:libz\n\
+	cmd:python$pythonVersion\
+	\""
+BUILD_REQUIRES="$BUILD_REQUIRES
+	setuptools_$pythonPackage"
+BUILD_PREREQUIRES="$BUILD_PREREQUIRES
+	cmd:python$pythonVersion"
+done
+
+REPLACES_python="
+	python_lxml
+	"
+
+INSTALL()
+{
+	for i in "${!PYTHON_PACKAGES[@]}"; do
+		pythonPackage=${PYTHON_PACKAGES[i]}
+		pythonVersion=${PYTHON_VERSIONS[$i]}
+
+		python=python$pythonVersion
+		installLocation=$prefix/lib/$python/vendor-packages/
+		export PYTHONPATH=$installLocation:$PYTHONPATH
+		mkdir -p $installLocation
+		rm -rf build
+		$python setup.py build install \
+			--root=/ --prefix=$prefix
+
+		packageEntries  $pythonPackage \
+			$prefix/lib/python*
+	done
+}