This fixes a small and rarely hit in practice regression regarding
nondeterministic ordering in makefile output introduced in 15c29eb (bug
505882).
Multiple values for a build output variable were previously output in
definition order. Now they are generated by iterating over a HashSet,
which does not have a deterministic iteration order. Use a TreeSet for
output in a consistently sorted order instead.
Output variables with multiple values are rare (most tools generate one
output file of a particular type) and this case was not exercised in the
existing unit tests. Modify one such that it does (even if in a somewhat
contrived situation). Of note, ${OUTPUT} cannot be used in the
commandLinePattern for such a tool because it squashes the multiple
values into a single quoted file name - misuse ${FLAGS} instead.
Change-Id: Iaa28525c21d74c87dd4d72a03e334ed0e5576727
Signed-off-by: Christian Walther <walther@indel.ch>
32a6ad1f4d