sunsetter 7g in beta

Mostly a bugfix version, but support for the xboard/winboard "analyse" command has been added, and pondering should also display in winboard/xboard now. Also support for the xboard "memory" command added, so you can set the hash table size from xboard or winboard.
All errors reported by gcc -Wall, cppcheck, and valgrind have now been fixed. Hopefully this means a lot less crashes.
Beta means if you run into a bug, let me know! I can't fix bugs that I do not know exist.
"