added config files for test compact cache
WMSTileFuser improvements
Fix ArcGISCompactCacheTest failure in path with spaces
abstract out TileRangeMask interface from RasterMask, allowing other masking approaches
Fix a bug by which truncate tasks are aborted.

FilePathFilter was accepting 'gridset' directories siblings of the one
it's supposed to evaluate as if they were intermediate directories
indide the gridset's tiles layout, which caused a NumberFormatException
in FilePathUtils.findZoomLevel() as it was called with a gridsetprefix
that didn't match the one being evaluated (i.e. the sibling ones)
Make TileLayer.getMetadataURLs() concrete, subclasses should override.

The method was introduced in the patch 1.5.1 version but its
an API change that breaks upgrading other projects to 1.5.1+

Making it concrete with the default and expected return value of null,
preserves the API compatibility.
update site location in RELEASE_GUIDE
Release notes for 1.5.2
Update to Java 7
Correct REST documentation.

The doc misleadingly says that the third value of the task-status-array contains the "# of tiles remaining", although the "expected remaining time in seconds" is contained in that value.
Correct javadoc.

The third parameter of the task-status-array contains the expected remaining time and not the # of remaining tiles.
#245, GeoWebCache complains about unrecognized element gwcConfig on startup
Fixed bug on GridSubSet class
Upgraded ImageIO-Ext version from 1.1.9 to 1.1.10
Added XMLBuilder
Changed WMS GetCapabilities to use XMLBUilder, Fixes #249
Unit test for WMS GetCapabilities failing to escape & character
Changed TMS GetCapabilities to use XMLBUilder
Ensure GetCap docs are UTF-8 as advertised
Changed WMTS GetCapabilities to use XMLBUilder