[[ Bug 13026 ]] specialfolderpath("engine") added on Mac
[[ Bug 13026 ]] specialfolderpath("engine") added on Linux
[[ Bug 13026 ]] Added specialfolderpath("engine") on Windows
[[ Bug 13026 ]] Docs updated for 'specialFolderPath' and 'engine folder'
[[ Bug 13026 ]] Bugfix simplified to use MCcmd
Merge remote-tracking branch 'sebastien/bugfix-13026' into bugfix-13026
Merge branch 'bugfix-13026' into develop