Improve errors when trying to give pennies to someone who is too rich/broke.

git-svn-id: https://pennmush.googlecode.com/svn/trunk@1827 ba372814-4f39-11de-9ad6-1127a62b9fcd
Rebuild help index.

git-svn-id: https://pennmush.googlecode.com/svn/trunk@1828 ba372814-4f39-11de-9ad6-1127a62b9fcd