[libFuzzer] add -print_funcs=1 (on bey default): print newly discovered functions during fuzzing

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@311797 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed