Update EntityUtils.java

Update for the 1.5.1 of bukkit.
Update AbstractGoal.java

Update for the 1.5.1 of bukkit.
Update EntityIdSearchStrategy.java

Update for the 1.5.1 of bukkit.
Update Rider.java

Update for the 1.5.1 of bukkit.
Update pom.xml

Update the pom.xml.
Merge pull request #59 from XxCoolGamesxX/master

Update for the 1.5.1 of Bukkit. : D