global: use raw string for setlocale() argument

Otherwise Python 2 will coerce a unicode to str, which fails
on HGUNICODEPEDANTRY=1.

Differential Revision: https://phab.mercurial-scm.org/D6052

hgext/histedit.py

@@ -953,7 +953,7 b' try:'
     # locale. This sets the locale to the user's default system
     # locale.
     import locale
-    locale.setlocale(locale.LC_ALL, u'')
+    locale.setlocale(locale.LC_ALL, r'')
 except ImportError:
     curses = None
 

mercurial/crecord.py

@@ -30,7 +30,7 b' stringio = util.stringio'
 
 # This is required for ncurses to display non-ASCII characters in default user
 # locale encoding correctly.  --immerrr
-locale.setlocale(locale.LC_ALL, u'')
+locale.setlocale(locale.LC_ALL, r'')
 
 # patch comments based on the git one
 diffhelptext = _("""# To remove '-' lines, make them ' ' lines (context).