android-941
Fixed some warnings.
[base] [coding] Moved file_name_utils.{c,h}pp from coding/ to base/.
[indexer] Style fixes for the DataHeader.
[ugc] Check UGC ratings in constructor.
[ugc][statistics] check for zombie reviews
[std] Use new include style for coding, fixes.
[indexer] DataSource refactoring
Review fixes
[base] Replaced the namespace my with base.
[ugc] GCC 6.1 build fix.
Review fixes.