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gcc: * cpphash.h (U): New define, to correct type of string constants. (ustrcmp, ustrncmp, ustrlen, uxstrdup, ustrchr): New wrapper routines, to do casts when passing unsigned strings to libc. * cppexp.c, cppfiles.c, cpphash.c, cppinit.c, cpplib.c: Use them. * cppfiles.c (_cpp_execute_include): Make filename an U_CHAR *. * cpphash.c (_cpp_quote_string): Make string an U_CHAR *. * cppinit.c (dump_special_to_buffer): Make macro name an U_CHAR *. * cpplex.c (parse_ifdef, parse_include, validate_else): Make second argument an U_CHAR *. * cppinit.c (builtin_array): Make name and value U_CHAR *, add length field, clean up initializer. (ISTABLE): Add __extension__ to designated- initializers version. * cpplex.c (CHARTAB): Likewise. * mbchar.c: Add dummy external declaration to the !MULTIBYTE_CHARS case so the file won't be empty. include: * symcat.h: Remove #endif label. From-SVN: r33657