al13: only check built-in functions
Abuild automatically changes CWD to $builddir, but only for the
built-in functions.
For custom split functions, this needst to be done manually, so AL13 should not apply in those cases.
Abuild automatically changes CWD to $builddir, but only for the
built-in functions.
For custom split functions, this needst to be done manually, so AL13 should not apply in those cases.