Add an HtmlDependencyReportTask task
- implements (hopefully) the ideas detailed in http://forums.gradle.org/gradle/topics/add_an_html_dependency_report
- generates a report for the current project, or for a set of projects
- combines the dependency report features with the dependency insight features
Add entries in the docs for the HtmlDependencyReportTask
Fix bug in HTML dependency report generation
- insight dependencies were matched with a "contains" spec instead of an "equals" spec
Fix for GRADLE-2774
Adds the ability to specify xml:withMessages for FindBugs XML report.

This also adds the text and emacs reporting options for FindBugs.
Next version is Gradle 1.9.
Fixed the spec for the task history in-memory cache.
Added spec for the story to hint gc() when daemon sits idle, after executing the build.
Merge branch 'release'

Conflicts:
	subprojects/docs/src/docs/release/notes.md
Added some internal capability that allows to find out whether we're in the long living process (long living daemon). It is needed for the in-memory task artifacts cache.
Reduced log level INFO->DEBUG in one place.
Initial implementation of the in-memory task history cache.

1. The cache speeds up incremental daemon builds (~20%), at some expense of memory. The gc performance looks actually slightly better with this change.
2. The cache is capped (educated guess) so that smaller-to-big builds should take advantage of it. However, for huge builds we're not keeping *entire* task history cache in memory otherwise the performance is actually reduced (both: speed & memory).
3. Needs to be reworked in few places. I'm looking for a review!
Merge branch 'release'
Reorganised the performance spec, and added a few more candidates.
Added a few things to consider while spiking the configuration model.
Added a spec listing some potential IDE integration improvements.
Moved this spec to 'done'
Added another candidate to the daemon spec.
Added a few more candidates
Added some spec / design for the first daemon hygiene action - gc() when idle.