Fix github issue 267 GPX: handling of desc attribute.
Fix http://trac.osgeo.org/openlayers/ticket/3554

Finally using Util.isElement and nothing else for cross-platform
compatibility according to elemoine's comments.

Tested on Chromium 18 Ubuntu 12.04.
8 tests fail (detailed: fail 9). List follows.

23:13:26 test_respectZoom: Google tests can't be run from localhost:8000
23:14:22 test_write_wmc_Layer: Safari has wierd behavior with getElementsByTagNameNS: the result is that we can't run these tests there. Patches welcome.
23:16:15 test_Layer_Google_constructor: Google tests can't be run from localhost:8000
23:16:15 test_clone: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_isBaseLayer: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_Translation_lonlat: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_Translation_pixel: Google tests can't be run from localhost:8000
23:16:15 test_Layer_destroy: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Goole_forwardMercator: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_overlay: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_isBaseLayer: Google tests can't be run from localhost:8000
23:16:15 test_Layer_Google_setGMapVisibility: Google tests can't be run from localhost:8000
23:20:13 test_Layer_MapServer_Reproject: Can't test google reprojection in Opera or Safari.
23:20:18 test_Layer_WMS_Reproject: Can't test google reprojection in Opera or Safari.
add index to details
#2938: [patch] Comparason type like with null (property not present)
#2940 Add relations support for OSM format
#2940 add shared
add indexDistance to LineString distanceTo Point
don't sort
rm loop brake
add version
rm end white space
Adding unit tests.
Fix irregular character that Ruby/Rails objects to
Merge branch 'master' of github.com:openlayers/openlayers
Merge branch 'master' of github.com:openlayers/openlayers
Zoomify - Fix for Wrong dimensions for marginal tiles for resolutions with dimensions dividable by tile size

- Fix for problem from this issue: https://github.com/openlayers/openlayers/issues/928
Added curly braces to meet coding style, corrected height variable instead of width on L242
Making tile scaling work with the Zoomify layer

Because zoomify tiles have different sizes, we also need to store the
standard tile size on the backbuffer. The Zoomify layer gets an override
for the createBackBuffer method to make sure that the native image size
is used.
Create capabilities format for WFS 2.0.0
WMTS createLayer method improved