ANSI does not allow a prototype to specify an item smaller than an int if the function uses an old-style definition.

ANSI does not allow a prototype to specify an item smaller than an int
if the function uses an old-style definition.  This only worked as a
GNUC extension, so stop doing it.
       * gengenrtl.c (type_from_format, accessor_from_format): Change
       type of parameter `c' from `char' to `int'.

From-SVN: r19922