87fe104537 depends: Use more legible qmake commands in qt package (Hennadii Stepanov)
bf35a8da6e depends: Do not set build_subdir for qt package (Hennadii Stepanov)
Pull request description:
Rather than using `cd` to jump all over the place, perform all `(q)make` commands from the top level directory.
Looking at bash like `cd ../../../..` gives me a headache.
Credits to **fanquake**.
This PR is an alternative to #20504 that works without any additional [non-trivial hack](https://github.com/bitcoin/bitcoin/pull/20504#issuecomment-734730336).
ACKs for top commit:
promag:
Tested ACK 87fe104537.
fanquake:
ACK 87fe104537
Tree-SHA512: 1d2a13b5358fc7406c5363ddd62fd363dbc0ec5ace68946e4d3e6e8620419afaa64ef2837488aaed226174e01e8897495085540f7126b80f8b2372d21b5b29f9