Redefinition of OMC_FILE macro

[hkiel]

Redefinition of OMC_FILE macro causes warnings from compiler:

1 warning generated.
In file included from LotkaVolterra_16dae.c:23:
In file included from ./LotkaVolterra_functions.h:15:
./LotkaVolterra_model.h:4:11: warning: 'OMC_FILE' macro redefined [-Wmacro-redefined]
  #define OMC_FILE "/tmp/OMEdit/LotkaVolterra_model.h"
LotkaVolterra_16dae.c:4:11: note: previous definition is here
  #define OMC_FILE "/tmp/OMEdit/LotkaVolterra_16dae.c"

Appears only when compiling for algorithmic/transformational debugger:
*_12jac.h
*_13opt.h
*_16dae.h
*_model.h