+attack - Minor Work & +compare

Brought in the +compare code from a previous project as it'll be needed
for the +attack and +defend stuff. Also done some minor work with
+attack, namely testing the use of compare`check
+attack - Mod

Forgot to include the optional <mod> to the commands. Also added in
Error.txt from the previous project, as new errors will likely be added
in.
+attack - Normal Attack

Got the command sending all the required data for a normal attack. One
down, several more to go!
+attack - Initial Finish

Much, much code changes. Modified some of the other files just a little
to make the +attack command easier to deal with. In its current state,
+attack is providing information to the +defend queue for all attack
types. Might need to upgrade it to supply more information (i'm thinking
player and vehicle stat values) but that can wait until i'm working on
the +defend resposnes.