Update Jenkinsfile
Support individual testing, follow Makefile
make [all] - make all googletest executable file(unittest & covTest)
make clean - remove all file generate by make
make triangle_*_test - run triangle test (change * to c0/c1/c2/c_MCDC)
make nextdate_*_test - run nextdate test (change * to c0/c1/c2/c_MCDC)
make commission_*_test - run commission test (change * to c0/c1/c2/c_MCDC)
cd make
make
./(executable file)
(after run the executable file)
gcov -b (feature code of the execute file)
vim (outputfile).c.gcov