MrSID Coordinate Systems with authority but missing parms!

[warmerdam]

Peng Gao ran into a problem reading a MrSID file.  Gdalinfo reports:

F:\ArcGIS>gdalinfo images\cen1.sid
Driver: MrSID/Multi-resolution Seamless Image Database (MrSID)
Size is 88000, 48000
Coordinate System is:
PROJCS["unnamed",
    GEOGCS["NAD83",
        DATUM["North_American_Datum_1983",
            SPHEROID["GRS 1980",6378137,298.2572221010002,
                AUTHORITY["EPSG","7019"]],
            AUTHORITY["EPSG","6269"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4269"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","26986"]]
Origin = (125000.000000,946000.000000)
Pixel Size = (0.50000000,-0.50000000)
Metadata:
  IMAGE__STATISTICS_MIN=0,0,0
  IMAGE__STATISTICS_MAX=255,255,255
  IMAGE__STATISTICS_MEAN=162.822423,151.612408,131.947881
  IMAGE__STATISTICS_STANDARD_DEVIATION=62.773987,66.190054,71.761312
  IMAGE__BITS_PER_SAMPLE=8
  GEOTIFF_NUM__1024__GTModelTypeGeoKey=1
  GEOTIFF_CHAR__GTModelTypeGeoKey=ModelTypeProjected
  GEOTIFF_NUM__1025__GTRasterTypeGeoKey=2
  GEOTIFF_CHAR__GTRasterTypeGeoKey=RasterPixelIsPoint
  GEOTIFF_NUM__2054__GeogAngularUnitsGeoKey=9102
  GEOTIFF_CHAR__GeogAngularUnitsGeoKey=Angular_Degree
  GEOTIFF_NUM__3072__ProjectedCSTypeGeoKey=26986
  GEOTIFF_CHAR__ProjectedCSTypeGeoKey=PCS_NAD83_Massachusetts
  GEOTIFF_NUM__3076__ProjLinearUnitsGeoKey=9001
  GEOTIFF_CHAR__ProjLinearUnitsGeoKey=Linear_Meter
  IMAGE__INPUT_FORMAT=TIFF w/ World File
  IMAGE__WIDTH=88000
  IMAGE__HEIGHT=48000
  IMAGE__COLOR_SCHEME=0
  IMAGE__DATA_TYPE=0
  IMAGE__INPUT_FILE_SIZE=10755608510.000000
  ....

The coordinate system is not properly expanded.  It is required that
the PROJECTION and PARAMETERs be properly set. 

In cases where we have only the ProjectedCSTypeGeoKey value in the MrSID
file we should use OGRSpatialReference::importFromEPSG() to initialize
an SRS with all the parameters.

[warmerdam]

Belay this bug.  It turns out the pcs.csv file couldn't be found because
GDAL_DATA wasn't set. Once that was correcting things worked fine.