Add position in BreakSpeed as per http://www.minecraftforge.net/forum/index.php/topic,9380.0.html

Add block position arguments in PlayerEvent.BreakSpeed and dependent methods.

* ForgeEventFactory.getBreakSpeed()
 * EntityPlayer.getCurrentPlayerStrVsBlock() (as well as the deprecated version)
 * Modified ForgeHooks.blockStrength() to call those methods with position.