pmt: Improvement.

- At build time, the version, compile time, CMake version, compiler version, and compiler flags are retrieved with the new CMake module and a header is created. This header provides more robust version management and notifications.
- Build warnings fixed, code corrected for compilation.
- Improvements were made to CMake code.
- Modifications were made to the tests to read the library's version information.

srclib/libhelper/tests/test.cpp

@@ -88,6 +88,8 @@ int main(int argc, char** argv)
 		std::cout << "pathJoin() test 3: " << Helper::pathJoin("mydir/", "/dir2") << std::endl;
 		std::cout << "pathJoin() test 4: " << Helper::pathJoin("mydir", "/dir2") << std::endl;
 
+		std::cout << Helper::getLibVersion() << std::endl;
+
 		LOG(INFO) << "Info message" << std::endl;
 		LOG(WARNING) << "Warning message" << std::endl;
 		LOG(ERROR) << "Error message" << std::endl;