update libexec for pkgx^2 #328

Job	Run time
unavailable	15s
local-edit-tests	1m 16s
unit-tests	24s
pyapp.com/pip (linux)	1m 53s
pyapp.com/poetry (linux)	1m 51s
stark.com/foo (linux)	1m 35s
toolchain.com (linux)	1m 41s
git-clone.com (linux)	1m 40s
pyapp.com/poetry (mac)	1m 2s
stark.com/foo@1.2.3 (linux)	1m 39s
version-transformer.com (mac)	33s
pc-cmake.com (linux)	1m 35s
pc-cmake.com (mac)	31s
stark.com/foo (mac)	36s
pyapp.com/pip (mac)	50s
fixups.org (mac)	35s
version-transformer.com (linux)	1m 33s
toolchain.com (mac)	33s
git-clone.com (mac)	41s
fix-machos.com (linux)	1m 32s
fix-machos.com (mac)	55s
stark.com/foo@1.2.3 (mac)	26s
fixups.org (linux)	1m 38s
	25m 14s

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