This patch fixes strings substitution in common.py during package
build with ebuild supporting installation for multiple Python versions.

With support for multiple Python versions in the ebuild, seems the
file isn't copied from staging/ to build-*/lib/ufw/ after being
modified. That's why the copy needs to be done "manually" here.
The issue occurs with "setup.py build -b build-XXX" followed by
"setup.py build -b build-XXX install".

probably related: https://bugs.launchpad.net/ufw/+bug/819600
--- setup.py
+++ setup.py
@@ -89,6 +89,8 @@
                              "-i",
                              "s%#SHARE_DIR#%" + real_sharedir + "%g",
                              os.path.join('staging', file)])
+            self.copy_file(os.path.join('staging', file),
+                           os.path.join(self.build_base, "lib", "ufw"))
 
         # Now byte-compile everything
         super(Install, self).run()