Support lib: use /samples directory. do not merge.

This NPW now looks for a "samples" directory at the root of
extras SDK packages. This renames the samples so they fit that
new pattern.

Content of the extra is thus:
/v4/*.jar
/v4/src/..
/v13/*.jar
/v13/src/..
/samples/Support4Demos/
/samples/Support13Demos/

(Cherry-pick from 913d903aa2480b387051ec41e6cd2580f7d72f96)

Change-Id: I4bb01d35ede7c7af45e80204c131361ffc4300ee
1 file changed