fixes for building gnulib non-recursively

[Mike Miller]

Hi, we are in the midst of converting the GNU Octave autotools build
system to a non-recursive one. The only remaining subdir is gnulib and
we'd like to build it non-recursively also. I see there is some
non-recursive support in gnulib, but it will need some small changes to
support Octave. Specifically, the directory name "lib" is hardcoded in a
few places, while Octave uses source_base=libgnu.

I'm attaching my work so far. I'm confident in 2 out of the 3 changes.
Any ideas on a better way to inject the value of $source_base into
autoconf snippets?

Thanks,

-- 
mike

0001-non-recursive-gnulib-prefix-hack-fix-when-source-bas.patch
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