Use #!/usr/bin/env for python scripts

This is recommended for upstream, but not for downstream, like Fedora.
So change /usr/bin/env to /usr/bin/python2 at RPM install time to
match the ideal Fedora config.

https://fedoraproject.org/wiki/Features/SystemPythonExecutablesUseSystemPython
https://bugzilla.redhat.com/show_bug.cgi?id=1303282

tests/test_inject.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 # Copyright (C) 2013, 2014 Red Hat, Inc.
 
 import atexit

virt-clone

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 #
 # Copyright(c) FUJITSU Limited 2007.
 #

virt-convert

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 #
 # Copyright 2008, 2013, 2014  Red Hat, Inc.
 # Joey Boggs <jboggs@redhat.com>

virt-install

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 #
 # Copyright 2005-2014 Red Hat, Inc.
 #

virt-manager

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 #
 # Copyright (C) 2006, 2014 Red Hat, Inc.
 # Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>

virt-manager.spec.in

@@ -106,6 +106,7 @@ machine).
 %prep
 %setup -q
 
+
 %build
 %if %{qemu_user}
 %global _qemu_user --qemu-user=%{qemu_user}
@@ -151,6 +152,13 @@ python setup.py \
     install -O1 --root=%{buildroot}
 %find_lang %{name}
 
+# Replace '#!/usr/bin/env python2' with '#!/usr/bin/python2'
+# The format is ideal for upstream, but not a distro. See:
+# https://fedoraproject.org/wiki/Features/SystemPythonExecutablesUseSystemPython
+for f in $(find %{buildroot} -type f -executable -print); do
+    sed -i "1 s|^#!/usr/bin/env python2|#!%{__python2}|" $f || :
+done
+
 # The conversion script was only added to virt-manager after several
 # Fedora cycles of using gsettings. Installing it now could convert old data
 # and wipe out recent settings.

virt-xml

@@ -1,4 +1,4 @@
-#!/usr/bin/python2 -tt
+#!/usr/bin/env python2 -tt
 #
 # Copyright 2013-2014 Red Hat, Inc.
 # Cole Robinson <crobinso@redhat.com>