Block soil changing back to dirt via flag.

The following changes since commit 0f92a79907d9ec90857a9b3d36a65e7354b8eec1:

  Implemented the ability to block soil from reverting back into dirt based on Spread flag. (2013-06-17 21:12:47 -0500)

are available in the git repository at:

  https://github.com/bekvon/Residence.git 

for you to fetch changes up to 0f92a79907d9ec90857a9b3d36a65e7354b8eec1:

  Implemented the ability to block soil from reverting back into dirt based on Spread flag. (2013-06-17 21:12:47 -0500)

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