itx: replace qw_ constant prefix with pw_

Makes it more consistent with the rest of the project.
13 jobs for master in 5 minutes and 15 seconds (queued for 1 second)
Status Job ID Name Coverage
  Style
passed #244162
amd64 debian
style-check

00:00:20

 
  Build
passed #244163
amd64 debian
build-debian

00:00:33

passed #244167
debian aarch64
build-debian-aarch64

00:01:27

passed #244168
debian aarch64
build-debian-aarch64-clang-5

00:01:11

passed #244164
amd64 debian
build-debian-static

00:00:34

passed #244170
debian aarch64
build-debian-werror

00:00:32

passed #244169
macos
build-macos

00:00:26

passed #244165
win32
build-win32

00:00:29

passed #244166
win64
build-win64

00:00:35

 
  Test
passed #244171
amd64 debian
test-debian

00:00:45

passed #244172
amd64 debian
test-debian-asan

00:02:01

passed #244173
amd64 debian
test-debian-msan

00:01:01

passed #244174
amd64 debian
test-debian-ubsan

00:01:21