build: Set a default TEST_VERBOSE to 0

Makecheck.am

@@ -1,12 +1,14 @@
 # Variables to be defined:
 #
-#  TEST_VERBOSE - set to 0 or 1 to control test suite verbosity
+#  TEST_VERBOSE - set to 0 (default) or 1 to control test suite verbosity
 #  TEST_ENV_VARS - environment variables to be set for the test suite
 #  TEST_COVERAGE - set to the perl module in charge of getting test coverage
 #  test_tmpdir - test suite temporary directory
 #  test_cases - list of test case files
 #  test_data - list of test data files
 
+TEST_VERBOSE ?= 0
+
 check-clean:
 	rm -fr $(test_tmpdir)
 

scripts/Makefile.am

@@ -172,7 +172,6 @@ coverage: check
 coverage-clean:
 	rm -rf cover_db
 
-TEST_VERBOSE= 0
 TEST_ENV_VARS = \
 	DPKG_DATADIR=$(srcdir)/.. \
 	DPKG_ORIGINS_DIR=$(srcdir)/t/origins

src/Makefile.am

@@ -86,8 +86,6 @@ install-data-local:
 	$(MKDIR_P) $(DESTDIR)$(admindir)/info
 	$(MKDIR_P) $(DESTDIR)$(admindir)/updates
 
-TEST_VERBOSE = 0
-
 test_tmpdir = t.tmp
 
 test_cases = \

utils/Makefile.am

@@ -66,7 +66,6 @@ if BUILD_INSTALL_INFO
 	rm -f $(DESTDIR)$(sbindir)/install-info
 endif
 
-TEST_VERBOSE = 0
 TEST_ENV_VARS = DPKG_DATADIR=$(top_srcdir)
 
 test_tmpdir = t.tmp