Merge pull request #3941 from dumganhar/iss2905-folder-structure

issue #2905: [iOS, Mac] HelloCpp works now.
Merge pull request #3942 from dumganhar/iss2905-folder-structure

issue #2905: [iOS, Mac] Always search user path.
issue #2905: testcpp bild ok on Android
Merge pull request #3945 from minggo/iss2905-adjust_folder

issue #2905: testcpp bild ok on Android
small fixes for the Xcode projects
Merge pull request #3948 from ricardoquesada/xcode_fixes

small fixes for the Xcode projects
issue #2905: Updating include path for 'cocostudio' module, adding 'cocostudio' prefix.
issue #2905: [iOS, Mac] Updating project configuration, TestCpp works now.