Vacation 1.2.7.0 beta 2 released

This new beta may be more on the alpha side of beta as it includes a substantial number of changes to improve security. Rather than using the standard strcpy, strcat, etc it now uses the OpenBSD secure string handling functions strlcat and strlcpy and use of sprintf has been changed to snprintf to try and avoid possible buffer overruns. I'm not actually aware of any attacks but this is quite old code so you never know your luck.

I've also changed the implementation of the nsearch() function to use strcasestr() which makes it much simpler.

Please test and comment!