giscanner: Use unicode literals in all Python files

Add unicode_literals future import which turns any string literal
into a unicode string. Return unicode strings from the Python C extension
module. Force writing of annotations (g-ir-annotation-tool) to output utf8
encoded data to stdout.
This is an initial pass at following the "unicode sandwich"
model of programming (http://nedbatchelder.com/text/unipain.html)
needed for supporting Python 3.

https://bugzilla.gnome.org/show_bug.cgi?id=679438

1 files changed, 2 insertions, 0 deletions

diff --git a/tools/g-ir-tool-template.in b/tools/g-ir-tool-template.in
index b7aaf4f0..c9234c28 100644
--- a/tools/g-ir-tool-template.in
+++ b/tools/g-ir-tool-template.in
@@ -21,6 +21,8 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
+from __future__ import unicode_literals
+
 import os
 import sys
 import __builtin__