* Makefile.in (gcc.o, prefix.o, cccp.o, cpplib.o): Depend on prefix.h.
* cccp.c: Include prefix.h, don't prototype prefix.c functions.
(new_include_prefix): Constify char* parameters.
* cppfiles.c (read_name_map): Likewise.
(append_include_chain): Likewise. Also, use a writable char* copy
of parameter `dir' which we then modify, rather than using the
parameter itself to store the new writable string.
(remap_filename): Constify some variables. Also, use a writable
char* to store an allocated string which we will be modifying.
* cpplib.c: Include prefix.h, don't prototype prefix.c functions.
(cpp_start_read): Constify variable `str'.
* cpplib.h (append_include_chain): Constify a char* parameter.
* gcc.c Include prefix.h, don't prototype prefix.c functions.
(add_prefix, save_string): Constify char* parameters.
(fatal, error): Add ATTRIBUTE_PRINTF_1 to prototypes.
* prefix.c: Include prefix.h.
(get_key_value, translate_name, save_string, update_path,
set_std_prefix): Constify various char* parameters and variables.
(save_string): Use xmalloc, not malloc.
(translate_name): Use a writable temporary variable to create and
modify a string before setting it to a const char*.
* prefix.h: New file to prototype functions exported from prefix.c.
From-SVN: r24498
