Reader raise a error when reading COPY components.

[karpenka]

Have an instrument which have this kind of code:

COMPONENT COPY(Guide_curved) = COPY(Guide_curved)()
AT (0, 0, 0.5) RELATIVE PREVIOUS
ROTATED (0,rot,0) RELATIVE PREVIOUS

COMPONENT COPY(Guide_curved) = COPY(Guide_curved)()
AT (0, 0, 0.5) RELATIVE PREVIOUS
ROTATED (0,rot,0) RELATIVE PREVIOUS
...

Reader raises error, which he shouldnt:
"NameError: Component name "COPY(Guide_curved)" used twice, McStas does not allow this. Rename or remove one instance of this name."