Convert parser of struct timeval to new mpers infrastructure

Convert parser of struct timeval to new mpers infrastructure

* defs.h (printtv, printtv_special): Remove.
[ALPHA] (print_timeval32, print_timeval32_pair): New prototypes.
* print_time.c (print_timeval): New mpers printer.
[ALPHA] (print_timeval32, print_timeval32_pair): New functions.
* time.c (sys_gettimeofday, sys_settimeofday): Use print_timeval
instead of printtv.
[ALPHA] (sys_osf_gettimeofday, sys_osf_settimeofday):
Use print_timeval32 instead of printtv_bitness.
* utimes.c [ALPHA] (sys_osf_utimes): Use print_timeval32_pair
instead of printtv_bitness.