- Fix bug not installing the import library associated to the installed dll
- This library has a dynamic runtime dependency to mlang.dll, which
needs to be excluded by the mingw64-filesystem package
- Add patch win-iconv-0.0.8-fix-library-prefix.patch to fix default
library prefix for mingw
- Rename package providing the shared libraries to libwin_iconv to
match common style
- Add separate development package for the static library