[utils/FuzzTest] The help message says that if you don't specify --max-tests "the script will run forever continually picking new tests to run", make it so.
[utils/FuzzTest] The help message says that if you don't specify --max-tests
"the script will run forever continually picking new tests to run", make it so.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@152327 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang