[qt5-qtwebengine-freeworld/f35] (11 commits) ...Try increasing SMP to -j6 for the next build.

Summary of changes: 810b2e6... patch use of deprecated harfbuzz apis (*) 5ed452a... 5.15.8 (*) e895e10... Fix sources. (*) 876b35c... Fix qtwebengine-everywhere-5.15.5-use-python2.patch. (*) 88e36e4... Sync qtwebengine-everywhere-5.15.5-use-python2 from Fedora. (*) fc032d4... Try enabling ARM builds. (*) 8bd81f6... Try x86_64 and aarch64 only, no armv7hl. (*) 01473c9... Remove bogus aarch64 no-jumbo-build hack. (*) 60cf505... Try harder to disable debuginfo on aarch64. (*) c8f693c... Try -j2 instead of -j8 on aarch64. (*) 8ca0bb7... Try increasing SMP to -j6 for the next build. (*) (*) This commit already existed in another branch; no separate mail sent