[MPIR-305] Upgrade Doxia + Site Tools to 1.6

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636067 13f79535-47bb-0310-9956-ffa450edef68
fixed typo

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636098 13f79535-47bb-0310-9956-ffa450edef68
improved IT with more test-case coverage

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636100 13f79535-47bb-0310-9956-ffa450edef68
[MTOOLCHAINS-10] Improved plugin output

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636103 13f79535-47bb-0310-9956-ffa450edef68
[MTOOLCHAINS-11] double check toochain type to protect against core bug MNG-5716

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636117 13f79535-47bb-0310-9956-ffa450edef68
improved output: differentiate no toolchain found vs no matching toolchain

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636122 13f79535-47bb-0310-9956-ffa450edef68
count toolchains found that do have the right type but do not match

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636129 13f79535-47bb-0310-9956-ffa450edef68
Fix sample configuration.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636150 13f79535-47bb-0310-9956-ffa450edef68
Fix typo in method name.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636151 13f79535-47bb-0310-9956-ffa450edef68
Fix title and use headings of appropriate size.
Use standard indentation.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636153 13f79535-47bb-0310-9956-ffa450edef68
Rewrite the usage page.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636154 13f79535-47bb-0310-9956-ffa450edef68
Change wording.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636156 13f79535-47bb-0310-9956-ffa450edef68
Removed the 'Resolved*' classes I introduced a few commits ago.

Improved understanding made me realize this is not the way to go

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1636157 13f79535-47bb-0310-9956-ffa450edef68
Update dependencies.

Bring various dependencies up to more recent versions.
(ie site plugin, plexus-utils, maven-plugin-testing-harness, animal
sniffer, mojo signature).
Remove some unnecessary overrides in pom (maven plugin annotatinos &
modello-maven-plugin).
Now java 6 - add more support

Add missing overrides
Removed unused imports
Add list/array list types (ie ReportPlugin & String)