[jenkins] - when cleaning the tree because of changed depends - ensure to
also clean any git repositories that might have been checked out in
depends - should fix building of android when depends change
Merge pull request #5260 from Memphiz/gitcleanforceforce

[jenkins] - when cleaning the tree because of changed depends - ensure to to doubleforce
[airplay] - fix http compliance by always sending the content-length header (even if content is 0 bytes) - fixes #15395
Merge pull request #5262 from Memphiz/airplayhttp
[added] Support for proper screenshot on some mce remotes

Add support print -> screenshot in this example.

Some MCE remotes have such keys as print, eject, slideshow, aspect etc.

e.g http://h10025.www1.hp.com/ewfrf/wc/document?cc=uk&lc=en&docname=c00844678