Log Message:
Upgrade to gdal v1.8.0 (and bump revision of packages that depend on it).
The changes are fully described at

     http://trac.osgeo.org/gdal/wiki/Release/1.8.0-News

However, the following are the highlights.

In a nutshell:

    * New GDAL drivers : GTX, HF2, JPEGLS, JP2OpenJPEG, JPIPKAK,
      KMLSUPEROVERLAY, LOS/LAS, MG4Lidar, NTv2, OZI, PDF, RASDAMAN,
      XYZ
    * New OGR drivers : AeronavFAA, ArcObjects, GPSBabel, HTF, LIBKML,
      MSSQLSpatial, NAS, OpenAir, PDS, PGDump, SOSI, SUA, WFS
    * Significantly improved OGR drivers : DXF, GML
    * New implemented RFCs:
      o RFC 7: Use VSILFILE for VSI*L Functions
      o RFC 24: Progressive data support in GDAL
      o RFC 28: OGR SQL Generalized Expressions
      o RFC 29: OGR Set Ignored Fields
      o RFC 30: Unicode Filenames
      o RFC 33: GTIFF - Corrected !PixelIsPoint Interpretation
    * New utility : gdallocationinfo

Backward compatibility issues:

    * MITAB driver: use "," for the OGR Feature Style id: parameter
      delimiter, not "." as per the spec. Known impacted application:
      MapServer?
    * RFC 33 changes the way PixelIsPoint? is handled for GeoTIFF
    * GML driver: write valid <gml:MultiGeometry> element instead of
      the non-conformant <gml:GeometryCollection>. For backward
      compatibility, recognize both syntax for the reading part