message: DOC: add MINT_USE_SIDRE to Doxyfile.in
  Adds MINT_USE_SIDRE to the list of PREDEFINED
  macros so that doxygen generates documentation
  for methods that conditionally compiled according
  to the MINT_USE_SIDRE def.
diff: @@ -2068,7 +2068,7 @@ INCLUDE_FILE_PATTERNS =
  # recursively expanded use the := operator instead of the = operator.
  # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
  -PREDEFINED =
  +PREDEFINED = MINT_USE_SIDRE
  # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
  # tag can be used to specify a list of macro names that should be expanded. The
  