run: add timestamps before each log message

Also time every run by default.

README.adoc

@@ -1145,6 +1145,8 @@ less out/aarch64/gem5/default/0/termout.txt
 less out/aarch64/gem5/default/1/termout.txt
 ....
 
+Each line is prepended with the timestamp in seconds since the start of the program when it appeared.
+
 You can also add a prefix to the build ID before a period:
 
 ....

configure

@@ -34,6 +34,7 @@ coreutils \
 cpio \
 expect \
 git \
+moreutils \
 tmux \
 unzip \
 vinagre \

run

@@ -363,7 +363,7 @@ if "$tmux"; then
     eval "./tmu ./rungdb -a '${arch} -L ${common_linux_variant}' -n ${common_run_id} ${tmux_args}"
   fi
 fi
-cmd="${cmd} \\
-|& tee ${common_termout_file} \
+cmd="time ${cmd} \\
+|& tee >(ts -s %.s > ${common_termout_file}) \
 "
 "${root_dir}/eeval" "$cmd" "${common_run_dir}/run.sh"