Only add common tool options when CommonOptionsParser is used.

[alexfh]

Summary

Subj.

[alexfh]

Ping.

[alexfh]

Ping.

[klimek]

Looks good

tools/clang/lib/Tooling/CommonOptionsParser.cpp

const char *const CommonOptionsParser::HelpMessage =
     "\tabsolute, it needs to point into CMake's source tree. If the path is\n"
     "\trelative, the current working directory needs to be in the CMake\n"
     "\tsource tree and the file must be in a subdirectory of the current\n"
     "\tworking directory. \"./\" prefixes in the relative files will be\n"
     "\tautomatically removed, but the rest of a relative path must be a\n"
     "\tsuffix of a path in the compile command database.\n"
     "\n";
 
+CommonOptionsParser::CommonOptionsParser(int &argc, const char **argv) {
   static cl::opt<std::string> BuildPath(
       "p", cl::desc("Build path"), cl::Optional);
 
   static cl::list<std::string> SourcePaths(
       cl::Positional, cl::desc("<source0> [... <sourceN>]"), cl::OneOrMore);
 
-CommonOptionsParser::CommonOptionsParser(int &argc, const char **argv) {
   Compilations.reset(FixedCompilationDatabase::loadFromCommandLine(argc,
                                                                    argv));
   cl::ParseCommandLineOptions(argc, argv);
   SourcePathList = SourcePaths;
   if (!Compilations) {
     std::string ErrorMessage;
     if (!BuildPath.empty()) {
       Compilations.reset(CompilationDatabase::autoDetectFromDirectory(