PVR: Resolve channel dummy in GUIWindowPVRTimerSettings

When using Backend channel number , use channel unique ID member instead channel number
PVR: Cosmetics in GUIWindowPVRTimerSettings
Defer demuxer pause until buffers full
changed: Make network buffer more flexible/configurable
changed: Move read cache logic from DVDPlayer to CFile
fixed: Tab -> space
[win32] PeripheralBusUSB::PerformDeviceScan: rename parameter for clarity
[win32] PeripheralBusUSB: declare constant values as "const"
Values not supposed to be changed is better to declare as "const" to allow compiler optimize better.
[win32] PeripheralBusUSB::PerformDeviceScan: check for real memory allocation
[win32] PeripheralBusUSB::PerformDeviceScan: add check for presence of PID and VID
[win32] PeripheralBusUSB::PerformDeviceScan: Cosmetics
[win32] PeripheralBusUSB::PerformDeviceScan: optimization
[win32] PeripheralBusUSB::PerformDeviceScan: skip device on error and get rest of the devices; plus small optimization
[win32] PeripheralBusUSB::PerformDeviceScan: Allow reuse of buffer
instead of multiple frees/mallocs
[win32] PeripheralBusUSB::PerformDeviceScan: add fast detection of HID devices
[win32] PeripheralBusUSB::PerformDeviceScan: use function designed for device ID extraction
AESinkALSA: Use the sink in blocking fashion
File: declare and implement class auto_buffer
File: replace CAutoBuffer usage with auto_buffer, fixes memory allocation check
File: add 'LoadFile' function and copy code from FileUtils