Updated decorstretch to make it compliant with ISIS coding standards(ref#2280)

<?xml version="1.0" encoding="UTF-8"?>

<application name="decorstretch" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://isis.astrogeology.usgs.gov/Schemas/Application/application.xsd">

<application name="decorstretch" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:noNamespaceSchemaLocation=

"http://isis.astrogeology.usgs.gov/Schemas/Application/application.xsd">

  <brief>

    Apply a Decorrelation Stretch to a cube

  </brief>

    <change name="Steven Lambright" date="2008-05-13">

      Removed references to CubeInfo

    </change>

    <change name = "David Miller" date = "2015-07-29">

      Brought application into compliance with ISIS

      coding standards.

    </change>

  </history>

  <groups>