message: Adds AXOM_DEBUG_DEFINE option to user docs
diff: @@ -280,46 +280,51 @@ CMake Configuration Options
  Here are the key build system options in Axom:
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | OPTION | Default | Description |
  -+==============================+=========+================================+
  -| AXOM_ENABLE_ALL_COMPONENTS | ON | Enable all components |
  -| | | by default |
  -+------------------------------+---------+--------------------------------+
  -| AXOM_ENABLE_<FOO> | ON | Enables the axom component |
  -| | | named 'foo' |
  ++==============================+=========+========================================+
  +| AXOM_DEBUG_DEFINE | DEFAULT | Controls whether the `AXOM_DEBUG` |
  +| | | compiler define is enabled |
  +| | | |
  +| | | By DEFAULT, it is enabled for |
  +| | | `Debug` and `RelWithDebInfo` configs |
  +| | | but this can be overridden by setting |
  +| | | `AXOM_DEBUG_DEFINE` to `ON` or `OFF` |
  ++------------------------------+---------+----------------------------------------+
  +| AXOM_ENABLE_ALL_COMPONENTS | ON | Enable all components by default |
  ++------------------------------+---------+----------------------------------------+
  +| AXOM_ENABLE_<FOO> | ON | Enables the axom component named 'foo' |
  | | | |
  | | | (e.g. AXOM_ENABLE_SIDRE) |
  | | | for the sidre component |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | AXOM_ENABLE_DOCS | ON | Builds documentation |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | AXOM_ENABLE_EXAMPLES | ON | Builds examples |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | AXOM_ENABLE_TESTS | ON | Builds unit tests |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | AXOM_ENABLE_TOOLS | ON | Builds tools |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | BUILD_SHARED_LIBS | OFF | Build shared libraries. |
  | | | Default is Static libraries |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | ENABLE_ALL_WARNINGS | ON | Enable extra compiler warnings |
  | | | in all build targets |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | ENABLE_BENCHMARKS | OFF | Enable google benchmark |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | ENABLE_CODECOV | ON | Enable code coverage via gcov |
  -+------------------------------+---------+--------------------------------+
  -| ENABLE_FORTRAN | ON | Enable Fortran compiler |
  -| | | support |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  +| ENABLE_FORTRAN | ON | Enable Fortran compiler support |
  ++------------------------------+---------+----------------------------------------+
  | ENABLE_MPI | OFF | Enable MPI |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  | ENABLE_OPENMP | OFF | Enable OpenMP |
  -+------------------------------+---------+--------------------------------+
  -| ENABLE_WARNINGS_AS_ERRORS | OFF | Compiler warnings treated as |
  ++------------------------------+---------+----------------------------------------+
  +| ENABLE_WARNINGS_AS_ERRORS | OFF | Compiler warnings treated as errors |
  | | | errors. |
  -+------------------------------+---------+--------------------------------+
  ++------------------------------+---------+----------------------------------------+
  If ``AXOM_ENABLE_ALL_COMPONENTS`` is OFF, you must explicitly enable the desired
  components (other than 'core', which is always enabled).
  