I want use minizip with Android NDK.
and I found that some ndk version has poor iconv support (only support in 32 bits).

I notice iconv_* is only used in mz_os_utf8_string_create which is only called by mz_zip_reader_save_all with reader->encoding > 0 and reader->file_info->flag & MZ_ZIP_FLAG_UTF8.
it's useless in some situation.

Shall we add a build option to remove iconv dependency for some platform?
or use JNI to call Java API for encoding converting.