CacheStrategy: remove usage of emulated win32 functions, switch to internal VFS
[tests/darwin] - fixed g_sysinfo.GetManufacturerName() test on osx
[vfs] IFile::Read and all derived classes: change to use size_t/ssize_t, do not use more than SSIZE_MAX of buffer for "Read()", small related fixes
[vfs] Change CFile::Read() to use size_t/ssize_t; add checks for "Read()" return values; some fixes for new types in "Read()"; update types in code to match 'ssize_t' returned by 'Read()'; some usage of negative return values for Read()
ZipManager::GetZipList: use auto_buffer, fix improper use of std::string internal buffer
Reflect int64_t -> size_t changes for "Read()" to Addons
[vfs] IFile::Write and all derived classes: change "int Write(void*, int64_t)" -> "ssize_t Write(void*, size_t)"', small related fixes
[vfs] Change CFile::Write() to use size_t/ssize_t; add checks for "Write()" results; check for negative values; update types to ssize_t
Reflect int64_t -> size_t changes for "Write()" to Addons
Merge pull request #4962 from Karlson2k/vfs_update_05_alt
Merge pull request #5476 from Karlson2k/cachestrat_upd_01

CacheStrategy: remove usage of emulated win32 functions, switch to internal VFS
[rbp/omxplayer] When opening a stream don't try to update gui so often
[ffmpeg] Speed up wtv index creation

The index creation is O(N^2) with number of entries (typically thousands).
On a Pi this can take more than 60 seconds to execute for a recording of a few hours.

By replacing with an O(N) loop, this takes virtually zero time
adds GetTvShowSeasons
move AddSeason() public.
adds GetArt function to (video) scraper, allowing art to be fetched given the video identifier.
refresh season art if a new season is found that isn't recorded in the database yet. Fixes #14339
REMOVEME: updated thetvdb.com scraper to support art updates
[omx] Report decoded image name
logging: Add microsecond timer to log messages