include build stamp in unix
*** 44,54 **** protocmp.terse \ sccscheck \ webrev \ which_scm \ ws \ ! xref PERLFILES= \ check_rtime \ find_elf \ interface_check \ --- 44,55 ---- protocmp.terse \ sccscheck \ webrev \ which_scm \ ws \ ! xref \ ! buildstamp PERLFILES= \ check_rtime \ find_elf \ interface_check \