kernel: remove alsa loopback device
add htop
fix horrible UB in alsa-lib

see comments and attached patch - the patch is not necessary
anymore since i found a way around the brokenness, and it's only
treating the wrong setter function, when it should also treat the
wrong getter functions.
i'm adding it to document the brokenness, and remove it in the
next commit.

the bug was noticed during a debug session to find out why openal
deadlocked, and didnt play anything at all.

ALSOFT_LOGLEVEL=3 came in quite handy while running the testprogram:

AL lib: UpdateDeviceParams: Format pre-setup: Stereo, Float, 44100hz, 1024 update size x4
AL lib: UpdateDeviceParams: Format post-setup: Stereo, Float, 48000hz, 0 update size x0
remove alsa-lib UB example patch
openal: make it possible to do a debug build