Do not record the configuration and build time so that builds can be
reproduced bit-for-bit.

--- perl-5.22.0/Configure	1970-01-01 01:00:00.000000000 +0100
+++ perl-5.22.0/Configure	2015-12-13 00:14:43.148165080 +0100
@@ -3834,6 +3817,7 @@ esac
 
 : who configured the system
 cf_time=`LC_ALL=C; LANGUAGE=C; export LC_ALL; export LANGUAGE; $date 2>&1`
+cf_time='Thu Jan  1 00:00:01 UTC 1970'
 case "$cf_by" in
 "")
 	cf_by=`(logname) 2>/dev/null`

--- perl-5.22.0/perl.c	2015-12-13 00:25:30.269156627 +0100
+++ perl-5.22.0/perl.c	2015-12-13 00:25:38.265218175 +0100
@@ -1795,7 +1795,7 @@ S_Internals_V(pTHX_ CV *cv)
     PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
 			      sizeof(non_bincompat_options) - 1, SVs_TEMP));
 
-#ifdef __DATE__
+#if 0
 #  ifdef __TIME__
     PUSHs(Perl_newSVpvn_flags(aTHX_
 			      STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),