[PostGIS] #883: [raster] Make every rtpostgis.sql function immutable strict when possible

[PostGIS]

#883: [raster] Make every rtpostgis.sql function immutable strict when possible
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  Reporter:  pracine  |      Owner:  pracine
      Type:  task     |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 2.0.0
 Component:  raster   |    Version:  master
Resolution:  fixed    |   Keywords:
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Changes (by komzpa):

 * milestone:  PostGIS Fund Me => PostGIS 2.0.0

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/883#comment:8>
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