After consultation with Jonathan, we realized that there was a missed optimization opportunity in the implementation of the various forms of operator+ for string.
operator+(char *, string) required a single allocation but operator+(string, char*) required two. This patch attempts to change that asymmetry. Again, I have been a longtime reader of the source code but this patch is one of my first attempts at contributing. I have attempted to follow all the rules but I am sure that I missed something. Please let me know if/how I can change the patch to make it acceptable. Thanks for all your hard work maintaing this vital piece of software! Will
