Hopefully fix all unix build errors and fixed also some bugs
initial work
Implement the possibility to use .splugin script plugins

Implemented is install uninstall and load on startup
missing: Not loading on crash
Add the possibility to create a test script  plugin
Script plugins can now use also dialogs
Add a squirrel binding for the compiler plugin

Now it is possible to compile targets
Merge branch 'Script_plugin_installer' into work_ongoing
Merge branch 'compiler_2' into work_ongoing
Fix annoyng error with the print function in squirrel
more detailed error messages for Squirrel Binding GetBuildTarget