[Users] Release-blocking (?) problem in Formaline (with patch)

[Erik Schnetter]

I just found a bug in Formaline where it can hang indefinitely. The problem
is in a line

cat /dev/null $(filter-out '$(TARBALL_DIR)/config-Cactus.files', $?) && \

where "cat" might be called without any arguments, and it the waits
forever. The solution is to change the line to

cat /dev/null $(filter-out '$(TARBALL_DIR)/config-Cactus.files', $?) && \

I'll file a proper bug report later, but I hope this correction can go into
the release.

-erik

-- 
Erik Schnetter <schnetter at gmail.com>
http://www.perimeterinstitute.ca/personal/eschnetter/
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