NAME 
t/codingstd/check_isxxx.t - checks that the isxxx() functions are passed unsigned char
SYNOPSIS
# test all files
% prove t/codingstd/check_isxxx.t
# test specific files
% perl t/codingstd/check_isxxx.t src/foo.c include/parrot/bar.h
DESCRIPTION
Checks all C language files to make sure that arguments to the isxxx() functions are explicitly cast to unsigned char.
