Upgrade sql from 1.5.3 to 1.5.4

[unixro]

I've made an sql file to upgrade the database from 1.5.3 to 1.5.4 . If anyone is interested try it out. Note proxy_history and profiles tables will be deleted, but this should be relatively safe.

[savd]

Works for me (17 hosts, 106 items, 3 proxy, 3 web scenario). Thanks.