Restore sbindir install support

Restore the ability to install sbin-tools into sbindir since it works
fine with pure distutils. The issue is python-exec/eclass-specific and
therefore all the relevant workarounds belong in the ebuild.
diff --git a/pym/portage/tests/__init__.py b/pym/portage/tests/__init__.py
index afa57e3..708dd59 100644
--- a/pym/portage/tests/__init__.py
+++ b/pym/portage/tests/__init__.py
@@ -197,9 +197,7 @@
 		self.cnf_path = cnf_path
 		self.cnf_etc_path = cnf_etc_path
 		self.bindir = cnf_bindir
-		# sbin scripts are installed by setup.py to the bindir
-		# they are relocated to /usr/sbin dir by the ebuild later
-		self.sbindir = self.bindir
+		self.sbindir = cnf_sbindir
 
 	def defaultTestResult(self):
 		return TextTestResult()
diff --git a/setup.py b/setup.py
index dba8539..8231c0a 100755
--- a/setup.py
+++ b/setup.py
@@ -30,10 +30,12 @@
 
 x_scripts = {
 	'bin': [
-		'bin/archive-conf', 'bin/dispatch-conf', 'bin/ebuild', 'bin/egencache',
-		'bin/emaint', 'bin/emerge', 'bin/emerge-webrsync', 'bin/emirrordist',
-		'bin/env-update', 'bin/etc-update', 'bin/fixpackages', 'bin/portageq',
-		'bin/quickpkg', 'bin/regenworld', 'bin/repoman',
+		'bin/ebuild', 'bin/egencache', 'bin/emerge', 'bin/emerge-webrsync',
+		'bin/emirrordist', 'bin/portageq', 'bin/quickpkg', 'bin/repoman'
+	],
+	'sbin': [
+		'bin/archive-conf', 'bin/dispatch-conf', 'bin/emaint', 'bin/env-update',
+		'bin/etc-update', 'bin/fixpackages', 'bin/regenworld'
 	],
 }
 
@@ -224,6 +226,10 @@
 	dir_name = 'bin'
 
 
+class x_build_scripts_sbin(x_build_scripts_custom):
+	dir_name = 'sbin'
+
+
 class x_build_scripts_portagebin(x_build_scripts_custom):
 	dir_name = 'portage'
 
@@ -238,6 +244,7 @@
 	def run(self):
 		self.run_command('build_scripts_bin')
 		self.run_command('build_scripts_portagebin')
+		self.run_command('build_scripts_sbin')
 
 
 class x_clean(clean):
@@ -473,6 +480,11 @@
 	var_name = 'bindir'
 
 
+class x_install_scripts_sbin(x_install_scripts_custom):
+	dir_name = 'sbin'
+	var_name = 'sbindir'
+
+
 class x_install_scripts_portagebin(x_install_scripts_custom):
 	dir_name = 'portage'
 	var_name = 'portage_bindir'
@@ -488,6 +500,7 @@
 	def run(self):
 		self.run_command('install_scripts_bin')
 		self.run_command('install_scripts_portagebin')
+		self.run_command('install_scripts_sbin')
 
 
 class x_sdist(sdist):
@@ -624,6 +637,7 @@
 		'build_scripts': x_build_scripts,
 		'build_scripts_bin': x_build_scripts_bin,
 		'build_scripts_portagebin': x_build_scripts_portagebin,
+		'build_scripts_sbin': x_build_scripts_sbin,
 		'build_tests': build_tests,
 		'clean': x_clean,
 		'docbook': docbook,
@@ -636,6 +650,7 @@
 		'install_scripts': x_install_scripts,
 		'install_scripts_bin': x_install_scripts_bin,
 		'install_scripts_portagebin': x_install_scripts_portagebin,
+		'install_scripts_sbin': x_install_scripts_sbin,
 		'sdist': x_sdist,
 		'test': test,
 	},