message: Adding fem/fe subdirectory to doxygen's input directories.
diff: @@ -765,6 +765,7 @@ INPUT = @MFEM_SOURCE_DIR@/doc/CodeDocumentation.dox \
  @MFEM_SOURCE_DIR@/linalg \
  @MFEM_SOURCE_DIR@/mesh \
  @MFEM_SOURCE_DIR@/fem \
  + @MFEM_SOURCE_DIR@/fem/fe \
  @MFEM_SOURCE_DIR@/examples \
  @MFEM_SOURCE_DIR@/examples/caliper \
  @MFEM_SOURCE_DIR@/examples/amgx \
  