Add an equals method to Contact.
A contact is equals to an other if they got the same bare Jid.
org.jivesoftware.smack
org.jivesoftware.smack.debugger
org.jivesoftware.smack.filter
org.jivesoftware.smack.packet
org.jivesoftware.smack.provider
org.jivesoftware.smack.proxy
org.jivesoftware.smack.sasl
org.jivesoftware.smack.util
org.jivesoftware.smackx
org.jivesoftware.smackx.bookmark
org.jivesoftware.smackx.commands
org.jivesoftware.smackx.debugger
org.jivesoftware.smackx.filetransfer
org.jivesoftware.smackx.muc
org.jivesoftware.smackx.packet
org.jivesoftware.smackx.provider
org.jivesoftware.smackx.search
org.jivesoftware.smackx.workgroup
org.jivesoftware.smackx.workgroup.agent
org.jivesoftware.smackx.workgroup.ext.forms
org.jivesoftware.smackx.workgroup.ext.history
org.jivesoftware.smackx.workgroup.ext.macros
org.jivesoftware.smackx.workgroup.ext.notes
org.jivesoftware.smackx.workgroup.packet
org.jivesoftware.smackx.workgroup.settings
org.jivesoftware.smackx.workgroup.user
org.jivesoftware.smackx.workgroup.util