[lmi] Any clean way to suppress --keep-going?

[Vadim Zeitlin]

 Hello,

 As I'm testing my changes with the official makefiles, I'm starting to
remember why I avoided using them as much as possible in the past... One of
very unusual and unexpected things they do is to force MAKEFLAGS to contain
--keep-going, which means that any kind of fatal error has all the chances
of being scrolled away from the screen before you can even see it (unless
you use --silent, but this has other problems). And I don't think there is
any clean way to prevent this option from being used, short of editing
GNUmakefile or doing "make MAKEFLAGS=-rR" which does work, but is ugly and
difficult (at least for me) to remember.

 I wonder if we could at least make this a make variable, so I could do
"make KEEP_GOING=''" without changing the current behaviour nor changing
the makefile? Ideally, of course, I'd say that this option should be just
removed and then "make -k" be used when/if it's needed, but as I don't
think you'd agree to do this, I'd like to at least suggest this compromise.

 Or, perhaps, there is some other/better way of avoiding this already?
VZ

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