exe launchers: fixed the case when folder jre\bin was locked.

It prevented updating the folder during patches.

native/WinLauncher/WinLauncher/WinLauncher.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright 2000-2013 JetBrains s.r.o.
+* Copyright 2000-2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -532,6 +532,7 @@ bool LoadJVMLibrary()
 {
   std::string dllName(jvmPath);
   std::string binDir = dllName + "\\bin";
+  TCHAR currentDir[MAX_PATH];
   std::string serverDllName = binDir + "\\server\\jvm.dll";
   std::string clientDllName = binDir + "\\client\\jvm.dll";
   if ((bServerJVM && FileExists(serverDllName)) || !FileExists(clientDllName))
@@ -544,12 +545,14 @@ bool LoadJVMLibrary()
   }
 
   // ensure we can find msvcr100.dll which is located in jre/bin directory; jvm.dll depends on it.
+  GetCurrentDirectory(sizeof(currentDir),currentDir);
   SetCurrentDirectoryA(binDir.c_str());
   hJVM = LoadLibraryA(dllName.c_str());
   if (hJVM)
   {
     pCreateJavaVM = (JNI_createJavaVM) GetProcAddress(hJVM, "JNI_CreateJavaVM");
   }
+  SetCurrentDirectory(currentDir);
   if (!pCreateJavaVM)
   {
     std::string jvmError = "Failed to load JVM DLL ";