[AML] Fix pts error correction logic
[scrapers] Support XSLT transforms (XML->XML) in the scrapers
cosmetic: indenting
[sorting] don't apply airdate when sorting by year if an empty airdate is specified. fixes #14276
- don't build xsltproc - it pulls in a lot of dependencies which are not available for rbpi (and so linker would try to link in x86 libs found in the system - which fails for arm linkage)
- force our libxml2 - fixes compilation on rbpi
[WIN32] changed: set background mode when minimized. prevents screen saver to kick in.
Merge pull request #3758 from jmarshallnz/xslt_scraper

XSLT support in scrapers
[musicdb] cosmetic: shift GetSong
[musicdb] cosmetic: default values
[musicdb] cosmetic: delete unused function
[musicdb] cosmetic: missing whitespace
[musicdb] cosmetic: fix some constness cosmetics
[musicdb] cosmetic: tidy up musicdatabase.h
[musicdb] cosmetic: whitespace removal
[musicdb] cosmetic: remove unused parameter from GetSongFromDataset
[musicdb] cosmetic: use ExecQuery for UpdateSong
[musicdb] cosmetic: adds an UpdateSong() wrapper for public use, and use it in JSON-RPC
[musicdb] cosmetic: tidy up the song table definition and GetSongByFileName
[musicdb] cosmetic: have (Update|Add)Song should take the constructed artist string rather than the vector of artists