= GDAL/OGR 1.8.1 release notes = 

The 1.8.1 release is a routine bug fix release on the stable GDAL/OGR 1.8
branch.

== General ==
 * Fix for windows build of cpl_vsil_gzip.cpp (#3908)
 * Fix OGRDataSource.Open() signature so utf8 translation works in C# (#3766).
 * Fix cpl_config.h.vc so it also works with mingw compiler on windows (#3960)
 * Fix GEOS configuration checking affecting GEOS 3.0.4 (#3990)
 * Support optional nmake.local file for local MSVC config (r22529).

== GDAL / Raster ==

 * GDALReplicateWord(): fix error with missing one pixel (#4090) 
 * Fix issue with duplicating metadata (#3961)
 * VRT: Fix issues with complex data types (#3977)
 * VRT: Fix issue with nodata values and uninitialized buffers (#4045)
 * VRT/.aux.xml: Fix performance with large color tables (#3961)
 * VRT: Fix for VRTs smaller than the default block size (#4137)
 * IDRISI/RST: Fix seg fault with missing fields in .ref and .rdc (#4100)
 * IDRISI: Fix problem with spherical inverse flattening (#3757)
 * GTIFF: Fix support for external overviews with COPY_SRC_OVERVIEWS (#3938)
 * GTIFF: Correct handling of linear geokeys in feet (#3091)
 * GTIFF: Fix edge anomoly issues with jpeg tiles (#4096)
 * GTIFF: Don't skip driver even if library versions differ (#4101)
 * SAGA: Fix reading/writing .sdat files larger than 2GB. (#4104)
 * PCIDSK: Various fixes particularly for linked files (r21513)
 * PCIDSK: Fixes for georeferencing parsing (#3913)
 * ECW: Added/fixed french ECW coordinate systems (#3868)
 * ECW: Force sign of y pixel size when needed (#393)
 * ECW: Support EPSG:n style coordinate systems (#3955)
 * ECW: Fixes related to geotransform overrides (#4131)
 * ERS: Handle .ers files in case insensitive way (#3974)
 * PNG: Add support for libpng >= 1.5.0 (#3914)
 * JP2KAK: Support reading and writing resolution info (#3847)
 * MRSID: Fix for configuring and building on MacOS X (#3910)
 * HFA (.img): Fix filename computations and updating for renaming files (#3897)
 * HFA (.img): Support reading 2bit compressed .img files (#3956)
 * HFA (.img): Fix for rewriting projection/datum parameters (#3969)
 * NITF: Correct hemisphere setting for ICORDS=U with world file (#3931)
 * NITF: Added NITF_DISABLE_RPF_LOCATION_TABLE_SANITY_TESTS option (#3930)
 * NITF: Make attribute section size hack safer (#4020)
 * EHDR: Improved floating point file detection (#3933)
 * ASRP: Approximated support for Azimuthal Equidistant in poles (#3946)
 * HDF5/BAG: fix handle and memory leaks (#3953)
 * HDF5: Avoid returning NULL from !GetProjectionRef() (#4076)
 * HDF5: Improve preservation of floating point precision in metadata (r22531).
 * JPIPKAK: Fix problems with overviews, windowing and errors (#3967)
 * USGSDEM: Fixing locale dependent parsing of numbers (#3886, #3979)
 * RS2: Support subdataset oriented metadata and overviews (#4006)
 * AIGRID: Support uncompressed integer images (ArcGIS 10) (#4035)
 * gdalwarp: Include !DstDensity mask in memory calculations (#4042)
 * GeoRaster: Full backport for fixes and features (#4039,#3266,#4071,#4072,#4132)
 * ENVISAT: Fix gcp computations for stripline products (#3160,#3709)
 * ENVISAT: Fix gcp computations for MERIS products (#4086)
 * SAR_CEOS: Fix potential crash with odd filenames. (#4065)
 * SAR_CEOS: Skip datasets with wrong record length. (#4146)
 * ENVI: Support ESRI style coordinate system strings (#3312)
 * JAXAPALSAR: Fix datatype of 1.5 level product (#4136)
 * gdalfillnodata: working file is created as bigtiff if possibly needed (#4088)

== OGR / Vector ==

 * LIBKML: Fix build issue against static libkml (#3909)
 * LIBKML: Improve checking to see if files are actually kml (#4003)
 * GML: Fix crash with invalid geometries when axis order is lat/long (#3935) 
 * GML: Support curves in directEdges (#3934)
 * GML: Do not force 3D linestrings for directed edges (#3936)
 * GPX/GeoRSS: Fix expat library order issue on unix (#3948)
 * PG/PGDUMP: Fix handling of NaN in zero width fields (#2112)
 * PGDUMP: Add CREATE_SCHEMA and DROP_TABLE layer options (#4033)
 * PGDUMP: Support wkbNone geometry better, and other subtle bugs (#4040)
 * OGR SQL: Allow double quoting column name in SELECT DISTINCT (#3966)
 * OGR SQL: Fix crashes with some uses of SUBSTR and CAST (#4055)
 * OGR SQL: Fix crash on IS NULL test on floating point fields (#4091)
 * OGR SQL: Fix error with SQL joins (#4112)
 * MSSQL: Fix for IDENTITY INSERT problem (#3992)
 * MSSQL: Fix for schema handling (#3951)
 * MSSQL: Fix for geometry handling with ExecuteSQL() (#4149)
 * OCI: Fix writing of tables with no general attributes (#4063)
 * GeoJSON: Fix assertion on ESRI json (#4056, #4057)
 * GeoJSON: Improve numeric field determination (#4082)
 * SHAPE: Fix decoding of triangle fans in multipatch files (#4081)
 * SHAPE: Fix multipolygon detection issue due to isClockwise failure (#4122)
 * MITAB: Fix handling of filenames with two dots in them. (#4123)
 * MITAB: Fix problems with null datetime values (#4150)
 * ogr2ogr: Improve -overwrite/-append handling (#4012)
 * ogr2ogr: Ensure -where fields are address in !SetIgnoredFields (#4015)