update libexec for pkgx^2 #326

Job	Run time
unavailable	25s
unit-tests	26s
local-edit-tests	6s
toolchain.com (linux)	2m 12s
stark.com/foo@1.2.3 (linux)	1m 52s
pyapp.com/pip (linux)	1m 42s
pyapp.com/poetry (linux)	39s
stark.com/foo (linux)	1m 53s
fix-machos.com (linux)	1m 42s
pc-cmake.com (linux)	1m 37s
pyapp.com/pip (mac)	35s
pyapp.com/poetry (mac)	25s
fix-machos.com (mac)	49s
stark.com/foo (mac)	39s
git-clone.com (linux)	1m 45s
version-transformer.com (linux)	1m 46s
git-clone.com (mac)	37s
fixups.org (linux)	1m 48s
toolchain.com (mac)	40s
stark.com/foo@1.2.3 (mac)	30s
version-transformer.com (mac)	29s
pc-cmake.com (mac)	1m 0s
fixups.org (mac)	36s
	24m 13s

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