Updates to tuning parameters from forum.
Merge remote-tracking branch 'remotes/origin/BUG-4246-Update_tuning_details_and_grabbers_for_1.3.0'
Update Swedish strings ( missing string id 1320)
Update latest IMDB scripts
Fix MySQL database upgrade for channels without tuning details (#4247)

On systems where there are channels in the database that don't have any
tuning details, the SQL script failed to execute. This is due to the
column being declared NOT NULL, but the subquery not returning any
channel number for these rows. Because the database upgrade fails,
starting SetupTv and/or the TvService is impossible and the TvEngine is
unusable.

The script for SQL Server still needs to be fixed.
Fix MSSQL database upgrade for channels without tuning details (#4247)

This applies an alternate version of the parent commit to the MSSQL
script. Thanks to Guzzi for the fix.
Merge branch 'BUG-4247-Database-upgrade-61-fails-without-tuningdetails'
Updated DVBC tuning details for Norway (Thanks aherbjornsen)
Update Tuning DVBC Germany (Thanks FreakyJ)
Updated DVBT tuning details UK Wenvoe (Thanks Elliotmc)
Allow filters to be build as unicode
Added local baseclasses for DirectShow filters

- DSHOW_BASE environmental variable is not needed anymore
Moved dshowhelper, DXUtil, fontEngine and Win7RefreshRateHelper under dshow folder
Moved MPC-HC subtitle engine under DirectShowFilters
Changed BDReader to use libbluray as GIT submodule
Updated build scripts to match the structural changes that have been done to native components
Removed remaining C++ sourced binaries from the GIT repo
Enabled multi processor compilation for C++ components to speed up the compilation times
Introduced debug / donotwaitforvsync setting for the Skin Engine

This setting has no benefit for normal use, but it is useful when debugging performance issues on Skin Engine side.
Fixed font color being passed as signed integer to font engine.