update libexec for pkgx^2 #323

Job	Run time
unavailable	19s
unit-tests	6s
local-edit-tests	19s
toolchain.com (linux)	1m 19s
version-transformer.com (linux)	1m 24s
fixups.org (mac)	36s
pyapp.com/poetry (mac)	1m 1s
git-clone.com (linux)	1m 31s
pc-cmake.com (linux)	1m 22s
pyapp.com/poetry (linux)	1m 40s
fix-machos.com (mac)	57s
git-clone.com (mac)	49s
stark.com/foo (linux)	1m 26s
stark.com/foo@1.2.3 (mac)	32s
stark.com/foo (mac)	30s
toolchain.com (mac)	31s
stark.com/foo@1.2.3 (linux)	1m 29s
pc-cmake.com (mac)	27s
pyapp.com/pip (linux)	1m 40s
version-transformer.com (mac)	35s
fix-machos.com (linux)	1m 23s
fixups.org (linux)	1m 23s
pyapp.com/pip (mac)	52s
	22m 11s

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