Pass on Fortran compiler and flags to CMake target

   - CC, CXX, CFLAGS, ... were passed on to the CMake compiled libraries.
     Fortran counterparts were missing.

OMCompiler/Makefile.omdev.mingw

@@ -49,7 +49,7 @@ docdir = ${prefix}/doc
 
 MSGPACK_CFLAGS = -march=i686
 
-CMAKE = CC="$(CC)" CXX="$(CXX)" CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" CPPFLAGS="$(CPPFLAGS)" LDFLAGS="$(LDFLAGS)" $(OMDEVMSYS)/bin/cmake/bin/cmake
+CMAKE = CC="$(CC)" CXX="$(CXX)" FC="$(FC)" CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" CPPFLAGS="$(CPPFLAGS)" FFLAGS="$(FCFLAGS)" LDFLAGS="$(LDFLAGS)" $(OMDEVMSYS)/bin/cmake/bin/cmake
 CMAKE_NO_CHECK_UNDEFINED = $(CMAKE)
 CMAKE_TARGET = "MSYS Makefiles"