Merge pull request #1107 from mprobinson/audio-latency

Adjust audio latency without restart
(XMB) Use the populate entries callback, fixes the segfault
Merge pull request #1108 from lakkatv/xmb

(XMB) Use the populate entries callback, fixes the segfault
apply_deferred_settings - nit
(XMB) Fix setttings values display
Merge pull request #1109 from lakkatv/xmb

(XMB) Fix setttings values display
(XMB) Some cleanups
(XMB) Don't use strcpy - always use strlcpy
(XMB) Move another global variable to XMB
(XMB) Make some stub function implementations for navigation/list operation callbacks
Run xmb_selection_pointer_changed for all 'navigation'-related
functions right now
(XMB) Rename num_nodes to something more sane
(XMB) Cleanups pt. 1
(XMB) Implement context reset
Merge pull request #1110 from lakkatv/xmb

(XMB) Implement context reset
Avoid compiler warnings in null_write_handler()