file, make command specified, and no flags or attrs-which-cause-inclusion
are spec'd. The notion is, if you change either of the last 2, it will
probably have very undesirable results, so only allow the make command to
be changed. override by clobbering the make command in the previous entry.
also, fix a bug where line number of original entry would get clobbered on
dup entry, so that if you had multiple dups the later ones would get bogus
initial definition info.
c026189f76