rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.

/*
 * I like using u8/u16/u32, but they don't seem to be defined anywhere.
 * So I solve the whole portability problem by defining them myself.
 */

typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;

typedef signed char s8;
typedef signed short s16;
typedef signed int s32;