4b2ce1 build.sh: always print std{out,err} logs given ${ARG_XTRACE} (-x.)

Authored and Committed by Lucio Andrés Illanes Albornoz (arab, vxp) 6 years ago
    build.sh: always print std{out,err} logs given ${ARG_XTRACE} (-x.)
    etc/build.usage: updated.
    subr/ex_pkg_dispatch.subr: set -o xtrace within child process given ${ARG_XTRACE} (-x.)
    subr/ex_setup_args.subr: set ${ARG_VERBOSE2} (-vv) given ${ARG_XTRACE} (-x.)
    
        
file modified
+4 -0
file modified
+1 -1
file modified
+3 -0
file modified
+2 -4