[FYI] {branch-1.11} tests: add missing dependency for some 'ar-lib*.test' tests

[Stefano Lattarini]

This change fixes spurious failures of the tests ar-lib4.test,
ar-lib6a.test and ar-lib6b.test.

* tests/Makefile.am (ar-lib4.log): Depend explicitly on the
`libtool-macros.log' file.
(ar-lib6a.log, ar-lib6b.log): Likewise.
---
 tests/Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 52b5114..bf732e5 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -958,6 +958,9 @@ $(parallel_tests)
 
 # FIXME: make these automatically computed once we are merged into
 # FIXME: the `testsuite-work' branch.
+ar-lib4.log: libtool-macros.log
+ar-lib6a.log: libtool-macros.log
+ar-lib6b.log: libtool-macros.log
 depcomp4.log: libtool-macros.log
 depcomp7.log: libtool-macros.log
 depcomp8b.log: libtool-macros.log
-- 
1.7.7.3