Move similar/editor/autosave.c -> similar/editor/autosave.cpp
Move similar/editor/centers.c -> similar/editor/centers.cpp
Move similar/editor/curves.c -> similar/editor/curves.cpp
Move similar/editor/eglobal.c -> similar/editor/eglobal.cpp
Move similar/editor/elight.c -> similar/editor/elight.cpp
Move similar/editor/eobject.c -> similar/editor/eobject.cpp
Move similar/editor/eswitch.c -> similar/editor/eswitch.cpp
Move similar/editor/fixseg.c -> similar/editor/fixseg.cpp