crecord: fixes the formatting of the select status in the status line The status line in the crecord has the "space" status field which has variable length depending on the length of the status label in the language of choice. In English, the status labels are "space: deselect" and "space:select". The "deselect" label is 2 glyphs longer. This makes the terminal output jump around if the terminal width is just right so that the shorter label makes the status line 1 line long, and the longer label makes it 2 lines long. This patch formats the selected status into a fixed-width field. The field width is the maximum of the lengths of the two possible labels, to account for differing translations and label lengths. This should make the label behavior uniform across localizations. There does not seem to be a test for crecord, so I verified the change manually with a local build of 'hg'.

cext: move PyInt macros to charencode.c properly Python3 build was broken at e9996bd7203f.

py3: change encoding.localstr to a subclass of bytes, not str