logic: revised loading Java library

* implemented a dynamic way (that does not involve the linker) to load the Java runtime library
* implemented JavaPathDetectorLinux
* Filepicker for Java runtime library now asks to pick JVM library instead of folder
* extended error handling for JavaEnvironmentFactory

src/lib/utility/file/FilePath.cpp

@@ -3,6 +3,7 @@
 #include <regex>
 
 #include "utility/logging/logging.h"
+#include "utility/utilityString.h"
 
 FilePath::FilePath()
 	: m_exists(false)
@@ -216,6 +217,11 @@ std::string FilePath::str() const
 	return m_path.generic_string();
 }
 
+std::string FilePath::getBackslashedString() const
+{
+	return utility::replace(str(), "/", "\\");
+}
+
 std::string FilePath::fileName() const
 {
 	return m_path.filename().generic_string();