Standardize conversion processes.

Too many arguments for or against the many methods:
stick to one inside a common function.

This commit will force recompilation of many files.

src/ScreenPackages.cpp

@@ -622,14 +622,14 @@ void ScreenPackages::HTTPUpdate()
 			m_sResponseName = "Malformed response.";
 			return;
 		}
-		m_iResponseCode = atoi(m_sBUFFER.substr(i+1,j-i).c_str());
+		m_iResponseCode = StringToInt(m_sBUFFER.substr(i+1,j-i));
 		m_sResponseName = m_sBUFFER.substr( j+1, k-j );
 
 		i = m_sBUFFER.find("Content-Length:");
 		j = m_sBUFFER.find("\n", i+1 );
 
 		if( i != string::npos )
-			m_iTotalBytes = atoi(m_sBUFFER.substr(i+16,j-i).c_str());
+			m_iTotalBytes = StringToInt(m_sBUFFER.substr(i+16,j-i));
 		else
 			m_iTotalBytes = -1;	//We don't know, so go until disconnect
 
@@ -696,7 +696,7 @@ bool ScreenPackages::ParseHTTPAddress( const RString &URL, RString &sProto, RStr
 	sServer = asMatches[1];
 	if( asMatches[3] != "" )
 	{
-		iPort = atoi(asMatches[3]);
+		iPort = StringToInt(asMatches[3]);
 		if( iPort == 0 )
 			return false;
 	}