Added rcIngoreUnused which can be called to ignore unused parameters.
Silenced additional unused parameter warning.
Silenced double->float conversion warning.
Removed header dependency between Detour and Recast due to addition of rcIgnoreUnused.  Added dtIgnoreUnused.
Merge pull request #8 from grahamboree/unused_warnings

Fix for google code Issue 108
Merge remote-tracking branch 'upstream/master' into static_analysis