enhancement: attempt to transliterate characters that fail to be conv…

…erted (#1124)

iconv_open failed in some scenarios

src/osdep/amiberry_filesys.cpp

@@ -46,7 +46,7 @@ void utf8_to_latin1_string(std::string& input, std::string& output)
 	std::vector<char> buf(1024);
 	std::string dst;
 
-	auto* iconv_ = iconv_open("ISO-8859-1", "UTF-8");
+	auto* iconv_ = iconv_open("ISO-8859-1//TRANSLIT", "UTF-8");
 
 	while (0 < src_size) {
 		char* dst_ptr = &buf[0];