Qt: fix OSS simple prefs

Close #11694
Qt: resume only for files

Close #11721 #11761
Qt: do not pause playback when resuming

It just shows a dialog, but does not block the playback.

Close #11708 #11705
Qt: correctly update the nowplaying info

Close #9960
TS: Fix crashing with CSA

Close #11955
win32: make sure libvlc.pc is installed before configuring npapi
Win32: use %ls for wchar_t strings

Signed-off-by: Rafaël Carré <funman@videolan.org>
subtitles: avoid VLA over untrusted input and variable shadowing
playlist: shadowing variables
stream: avoid shadowing
es_out: avoid shadowing
input: fix shadowed variable
input: fix shadowed variable
stream: remove shadow variable
help: fix variable shadowing
aout: avoid implicit double upconversion
playlist: avoid implicit double upconversion
input: avoid implicit double upconversion
input: fix floating point comparison

The value is later used as single precision, so the comparison has to
have single precision too.
input: avoid implicit upconversion to double