mingw64-x86_64-librevenge0.0-src: Document import filter base library for Win64 toolchain (source)

    2018-01-08 18:31           0 mingw64-x86_64-librevenge0.0-0.0.4-2.src/
    2018-01-08 18:31      421604 mingw64-x86_64-librevenge0.0-0.0.4-2.src/librevenge-0.0.4.tar.xz
    2018-01-08 18:31         650 mingw64-x86_64-librevenge0.0-0.0.4-2.src/mingw64-x86_64-librevenge0.0.cygport