A bug in !1700 cause the encoder to pass all parameters into all layers (independent of the specified target layer)

At the encoder there are long parameters like "--QP=32" and short parameters like "-q 32"

For layer parameters -lx (with x being the layer index) the encoder always assumes that
-lx is followed by two parameters, which is only true for short type parameters.

This checks for "--" in the first parameter following -lx and only reads a second parameter,
if "--" is not found at the beginning.

Renumbering level according to major*16+minor*3, with maximum level now
15.5 (not 8.3).