Search full license root subtree in search by type (#3343)
Search full license root subtree in search by type (#3343)

Previously, search by license type only searched the contents of the
chain of direct ancestor subdirectories. This change broadens the search
to the full subtree of the current license root when no license is found
in the chain of direct ancestor directories.
krisgiesing/sky_engine,cdotstout/sky_engine,jason-simmons/flutter_engine,devoncarew/engine,aam/engine,jason-simmons/flutter_engine,devoncarew/engine,jamesr/sky_engine,mikejurka/engine,tvolkert/engine,rmacnak-google/engine,flutter/engine,jamesr/sky_engine,jamesr/flutter_engine,rmacnak-google/engine,flutter/engine,aam/engine,devoncarew/engine,devoncarew/sky_engine,jamesr/sky_engine,jamesr/flutter_engine,rmacnak-google/engine,jason-simmons/sky_engine,krisgiesing/sky_engine,chinmaygarde/sky_engine,krisgiesing/sky_engine,aam/engine,devoncarew/engine,rmacnak-google/engine,flutter/engine,Hixie/sky_engine,devoncarew/sky_engine,rmacnak-google/engine,devoncarew/engine,jason-simmons/sky_engine,jamesr/flutter_engine,flutter/engine,chinmaygarde/sky_engine,mikejurka/engine,tvolkert/engine,chinmaygarde/sky_engine,tvolkert/engine,Hixie/sky_engine,jason-simmons/sky_engine,jason-simmons/flutter_engine,devoncarew/sky_engine,Hixie/sky_engine,mikejurka/engine,devoncarew/sky_engine,rmacnak-google/engine,jamesr/flutter_engine,devoncarew/sky_engine,devoncarew/sky_engine,cdotstout/sky_engine,jason-simmons/flutter_engine,aam/engine,jamesr/flutter_engine,aam/engine,tvolkert/engine,chinmaygarde/flutter_engine,mikejurka/engine,chinmaygarde/flutter_engine,tvolkert/engine,Hixie/sky_engine,krisgiesing/sky_engine,jason-simmons/flutter_engine,chinmaygarde/sky_engine,aam/engine,chinmaygarde/sky_engine,Hixie/sky_engine,cdotstout/sky_engine,jason-simmons/sky_engine,flutter/engine,jamesr/flutter_engine,chinmaygarde/flutter_engine,flutter/engine,cdotstout/sky_engine,mikejurka/engine,krisgiesing/sky_engine,chinmaygarde/flutter_engine,aam/engine,chinmaygarde/flutter_engine,cdotstout/sky_engine,jason-simmons/flutter_engine,chinmaygarde/flutter_engine,jamesr/sky_engine,jamesr/flutter_engine,mikejurka/engine,aam/engine,jamesr/sky_engine,mikejurka/engine,jason-simmons/flutter_engine,mikejurka/engine,flutter/engine,devoncarew/engine,cdotstout/sky_engine,jason-simmons/sky_engine,jason-simmons/sky_engine,devoncarew/sky_engine,devoncarew/engine,krisgiesing/sky_engine,jason-simmons/sky_engine,krisgiesing/sky_engine,tvolkert/engine,tvolkert/engine,mikejurka/engine,rmacnak-google/engine,jamesr/sky_engine,Hixie/sky_engine,flutter/engine,jamesr/flutter_engine,jamesr/flutter_engine,Hixie/sky_engine,jason-simmons/flutter_engine,Hixie/sky_engine,chinmaygarde/sky_engine,chinmaygarde/flutter_engine,cdotstout/sky_engine,chinmaygarde/sky_engine,jamesr/sky_engine