[smooth, raster] Re-enable standalone compilation.

* src/raster/ftraster.c (FT_RENDER_POOL_SIZE, FT_MAX)
[_STANDALONE_]: Define macros.

* src/smooth/ftgrays.c (FT_RENDER_POOL_SIZE, FT_MAX, FT_ABS,
FT_HYPOT) [_STANDALONE_]: Define macros.
3 files changed