Bump clang version to 9.0.1

Let's go away from clang 8.0.1

Trac:
Parent Ticket: #33184 (moved)

added GeorgKoppen202006 TorBrowserTeam202006R component::applications/tor browser gitlab-tb-tor-browser-build owner::gk parent::33184 priority::high reviewer::sysrqb severity::normal sponsor::58-must status::needs-review tbb-mobile tbb-rbm type::defect labels

Some reproducibility issues were fixed only in clang 10.0.0.

Trac:
Status: new to assigned
Keywords: TorBrowserTeam202004 deleted, GeorgKoppen202005, TorBrowserTeam202005 added
Owner: tbb-team to gk
Cc: sysrqb, boklm, acat to tbb-team
Parent: #33626 (moved) to #33184 (moved)

Trac:
Reviewer: N/A to sysrqb

Moving tickets to high prio.

Trac:
Priority: Medium to High

This is ready for review on my branch fenix_toolchain (https://gitweb.torproject.org/user/gk/tor-browser-build.git/commit/?h=fenix_toolchain&id=b0003d1e859b16d853dd68e7c3305aa24a926d6f).

Trac:
Status: assigned to needs_review
Keywords: TorBrowserTeam202005 deleted, TorBrowserTeam202005R added

sponsor58-must

Trac:
Sponsor: N/A to Sponsor58-must

Moving review tickets.

Trac:
Keywords: TorBrowserTeam202005R deleted, TorBrowserTeam202006R added

This needs a small fixup at least.

Trac:
Keywords: GeorgKoppen202005, TorBrowserTeam202006R deleted, TorBrowserTeam202006, GeorgKoppen202006 added
Status: needs_review to needs_revision

Replying to gk:

This needs a small fixup at least.

fenix_toolchain5 (https://gitweb.torproject.org/user/gk/tor-browser-build.git/commit/?h=fenix_toolchain5&id=2b8bbc4b72caca118c9201dea1ed7b839217aa0a) has it (I forgot to remove the git requirement for applying the Windows patches, which we don't need with clang 9 anymore)

Trac:
Status: needs_revision to needs_review
Keywords: TorBrowserTeam202006 deleted, TorBrowserTeam202006R added

Add magic gitlab keyword.

Trac:
Keywords: N/A deleted, gitlab-tb-tor-browser-build added

mentioned in issue #33184 (moved)

moved to tpo/applications/tor-browser-build#34011 (closed)