netcdf driver: only call nc_close on a valid netcdf id when closing dataset ; reduce verbosity

git-svn-id: https://svn.osgeo.org/gdal/trunk@26151 f0d54148-0727-0410-94bb-9a71ac55c965
suppress error messages when opening /vsimem dataset in HTTP driver - not all drivers support this

git-svn-id: https://svn.osgeo.org/gdal/trunk@26152 f0d54148-0727-0410-94bb-9a71ac55c965
add link to ConfigOptions page for other configuration options (#4946)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26153 f0d54148-0727-0410-94bb-9a71ac55c965
NAS: also accept XML files that have NAS-Operationen_optional.xsd in header

From: Juergen E. Fischer <jef@norbit.de>

git-svn-id: https://svn.osgeo.org/gdal/trunk@26154 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'shape-recover-repack' of https://github.com/jef-n/gdal into shape-recover-repack

From: Even Rouault <even.rouault@mines-paris.org>

git-svn-id: https://svn.osgeo.org/gdal/trunk@26155 f0d54148-0727-0410-94bb-9a71ac55c965
Test robustness on REPACK on a .dbf file opened twice

From: Even Rouault <even.rouault@mines-paris.org>

git-svn-id: https://svn.osgeo.org/gdal/trunk@26156 f0d54148-0727-0410-94bb-9a71ac55c965
Shapefile: delete temporary .cpg file earlier in REPACK

From: Even Rouault <even.rouault@mines-paris.org>

git-svn-id: https://svn.osgeo.org/gdal/trunk@26157 f0d54148-0727-0410-94bb-9a71ac55c965
gdaldem: check that value of -z, -s, -az and -alt is numeric

git-svn-id: https://svn.osgeo.org/gdal/trunk@26158 f0d54148-0727-0410-94bb-9a71ac55c965
Recognise falseNorthing=10000000 as UTM South (#5152)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26159 f0d54148-0727-0410-94bb-9a71ac55c965
add python-numpy to .travis.yml

git-svn-id: https://svn.osgeo.org/gdal/trunk@26161 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' of github.com:rouault/gdal into trunk_with_coverage
fix URL