update libexec for pkgx^2 #318

Job	Run time
local-edit-tests	20s
unavailable	22s
unit-tests	27s
pyapp.com/pip (linux)	29s
toolchain.com (mac)	42s
fix-machos.com (mac)	40s
stark.com/foo (mac)	42s
pyapp.com/pip (mac)	1m 8s
stark.com/foo@1.2.3 (linux)	26s
pyapp.com/poetry (mac)	58s
toolchain.com (linux)	31s
pc-cmake.com (mac)	37s
stark.com/foo@1.2.3 (mac)	42s
fixups.org (linux)	25s
git-clone.com (linux)	27s
fix-machos.com (linux)	25s
version-transformer.com (mac)	42s
pc-cmake.com (linux)	23s
fixups.org (mac)	36s
stark.com/foo (linux)	26s
git-clone.com (mac)	23s
pyapp.com/poetry (linux)	26s
version-transformer.com (linux)	30s
	12m 47s

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