makefile: Force UTF-8 encoding in xgettext
tree22b5ab9c61af86666de0a4aa23a108c39159197e
drwxr-xr-x - .tx
-rw-r--r-- 35147 COPYING
-rw-r--r-- 138 MANIFEST.in
-rw-r--r-- 10353 README
drwxr-xr-x - bin
-rw-r--r-- 4964 makefile
drwxr-xr-x - po
-rw-r--r-- 7432 setup.py
drwxr-xr-x - share
drwxr-xr-x - src
drwxr-xr-x - tools