stringlib: use system atof implementation instead of broken one

game_shared/stringlib.cpp

@@ -229,6 +229,8 @@ int Q_atoi( const char *str )
 
 float Q_atof( const char *str )
 {
+#if 0
+// BROKEN IMPLEMENTATION, NEED DEBUG
 	double	val = 0;
 	int	c, sign, decimal, total;
 
@@ -292,6 +294,10 @@ float Q_atof( const char *str )
 	}
 	
 	return val * sign;
+#else
+// so use libc instead
+	return atof(str);
+#endif
 }
 
 void Q_atov( float *vec, const char *str, size_t siz )