Changed charset conversion function from 'any to any' to 'any to utf8'

Update bctoolbox for this commit to work

include/linphone/utils/utils.h

@@ -129,7 +129,7 @@ namespace Utils {
 
 	LINPHONE_PUBLIC std::string localeToUtf8 (const std::string &str);
 	LINPHONE_PUBLIC std::string utf8ToLocale (const std::string &str);
-	LINPHONE_PUBLIC std::string convertString (const std::string &str, const std::string &from, const std::string &to);
+	LINPHONE_PUBLIC std::string convertAnyToUtf8 (const std::string &str, const std::string &encoding);
 }
 
 LINPHONE_END_NAMESPACE

src/chat/chat-message/chat-message.cpp

@@ -457,7 +457,7 @@ static void forceUtf8Content (Content &content) {
 	charset = charset.substr(begin, end - begin);
 
 	if (Utils::stringToLower(charset) != "utf-8") {
-		string utf8Body = Utils::convertString(content.getBodyAsUtf8String(), charset, "UTF-8");
+		string utf8Body = Utils::convertAnyToUtf8(content.getBodyAsUtf8String(), charset);
 		if (!utf8Body.empty()) {
 			// TODO: use move operator if possible in the future!
 			content.setBodyFromUtf8(utf8Body);

src/utils/utils.cpp

@@ -243,8 +243,8 @@ string Utils::utf8ToLocale (const string &str) {
 	return localeStr;
 }
 
-string Utils::convertString (const string &str, const string &from, const string &to) {
-	char *cStr = bctbx_convert_from_to(str.c_str(), from.c_str(), to.c_str());
+string Utils::convertAnyToUtf8 (const string &str, const string &encoding) {
+	char *cStr = bctbx_convert_any_to_utf8(str.c_str(), encoding.c_str());
 	string convertedStr = cStringToCppString(cStr);
 	bctbx_free(cStr);
 	return convertedStr;