Refinement by Stefan Krah (see issue 11715, msg133194) to exit early if the
dpkg-architecture command is not found on $PATH. This should fix the failures on FreeBSD and Solaris, which do not create the target file via I/O redirection if the command isn't found (unlike Linux and OS X which do).
B
Barry Warsaw committed
88e194513e60853f7074d8f0fbca75d987a7a124
Parent: 5ca305a