python3-libselinux: Update to 3.5, rename source/target package

python3-libselinux: Update to 3.5, rename source/target package

* Rename:

  * Source package from python3-libselinux to python-selinux
  * Target package from python3-libselinux to python3-selinux

* Update dependents with new target package name

* Remove patches:

  * 010-setup-py-custom-cc.patch: LDSHARED is already set as part of
    $(PYTHON3_VARS)

  * 020-Make-use-of-variables-when-defining-libdir-and-inclu.patch: This
    package doesn't install the libselinux.pc file

* Update package title and dependencies

* Remove Build/InstallDev (files not used by any other package)

* Use Py3Package to build Python bytecode and source packages

Signed-off-by: Jeffery To <jeffery.to@gmail.com>