Änderungen

Second try to add Lua support (#867)
* Revert "Revert "Merge branch 'lua'""
 This reverts commit 6db5d0929fe004ac85fcf0a4be08eaffe08c8f39, which
reverted merging the Lua branch into master

* fixed merge syntax error

* fixed wrong translation of default value (see #852)

* avoid NPE reported by frotty in commit
6db5d0929fe004ac85fcf0a4be08eaffe08c8f39

* Apply project config on runmap and and set lua flag for lua builds

* add error messages to lua

* fix lua array initialization and translation of null

* improved handling of generics w/ ints

* lua stacktrace improvements

* fixed lua casting enums to int

* fix lua: null instanceof something

* fixed or ignored failing lua unit tests
 (commit: c4c1499)