fixed: Freezing when player fails to queue the next song (fixes #14297 #14231 #14229 #13919)
[droid] update README.android for unified deps
depends: pull zlib from our mirror instead of zlib.net (which is down atm)
jsonrpc: remove some unnecessary or confusing log messages
[jenkins] - add buildsteps for linux32
depends: drop custom libgcrypt patch in favor of their upstream fix

Fixes Linux build (fvisibility=hidden)

Note: since this is an upstream patch, it can be dropped when we bump to
 >= 1.5.0
Merge pull request #2669 from arnova/paplayer_playlist_freeze_fix

fixed: Freezing when player fails to queue the next song (fixes #14297 #14231 #14229 #13919)
Merge pull request #2673 from Memphiz/jenkins

[jenkins] - add buildsteps for linux32
[musicdb] musicdb restructure for musicbrainz artist IDs - remove artist/album ID from CSong and place into artist/album
[musicdb] make musicbrainzIDs in FileItem tags use std::vectors
[musicdb] rewrite the info scanner, music database and gui windows for musicbrainz
[musicdb] update the Scanner & Scrapers to support ID resolution for MusicBrainzIDs
[musicdb] refactor out FindAlbumInfo and tidy up some common code
[musicdb] implement a per host rate-limiter to avoid hitting the musicbrainz rate-limit and be more friendly to our peers. also update the MB scrapers so they cache properly (caching by filename) to remove www. and make http://musicbrainz.org the standard.
[musicdb] support reading/writing compilation flag from the scrapers
[musicdb] support reading/writing song credits from the scrapers
[musicdb] set art properly for musicdb items in the song info view, and set more all artist arts (artist thumbs)
[musicdb] cosmetic: update the music database APIs to be more consistent
[musicdb] scrapers mod, remove unused variable
[musicdb] update scrapers to support musicbrainz lookups