Revert "translate SyntaxAssociativity"

This reverts commit 2e7d21c64adb368224e3139812a0d218085f557a.
small
renamed tests to fix maven test trigger
Revert "Revert "partial fix for OS.current()""

This reverts commit 63a16cf639c146e8e9392e92d438c3f19f80e5ce.
OS lowercase again