.travis.yml: add VERBOSE=1 to make flags in order to log test failures
.travis.yml: add VERBOSE=1 to make flags in order to log test failures

"As with the serial harness above, by default one status line is printed
per completed test, and a short summary after the suite has completed.
However, standard output and standard error of the test are redirected
to a per-test log file, so that parallel execution does not produce
intermingled output. The output from failed tests is collected in the
test-suite.log file. If the variable ‘VERBOSE’ is set, this file is
output after the summary."

(http://www.gnu.org/software/automake/manual/html_node/Parallel-Test-Harness.html)

pepsi7959/protobuf-c,koolhazz/protobuf-c,pepsi7959/protobuf-c,Sannis/protobuf-c,lanniaoershi/protobuf-c,virqin/protobuf-c,y12uc231/protobuf-c,tutu12777/protobuf-c,koolhazz/protobuf-c,y12uc231/protobuf-c,virqin/protobuf-c,virqin/protobuf-c,koolhazz/protobuf-c,tutu12777/protobuf-c,Sannis/protobuf-c,hongbinz/protobuf-c,pepsi7959/protobuf-c,lanniaoershi/protobuf-c,hongbinz/protobuf-c,tutu12777/protobuf-c,hongbinz/protobuf-c,y12uc231/protobuf-c,lanniaoershi/protobuf-c,Sannis/protobuf-c