[tz] defensive value for define on Solaris causes load of timerule to fail

Hi, The FILENAME_MAX macro, as used in the local_storage union in localtime.c, has on Solaris the very low/defensive value of 14 (from stdio.h). Please consider using PATH_MAX, from limits.h instead, as that value is (usually) 250 or beyond. Or anything else, that can hold reasonable lengths of file names. Loading zonefiles now fails on Solaris if a filename exceeds the used macro. Regards, Kees