Use mingw-w64/clang toolchain to build tor

We should switch to our mingw-w64/clang toolchain to build tor.

Trac:
Parent Ticket: legacy/trac#29318 (moved)
Child Ticket(s): legacy/trac#29322 (moved), legacy/trac#29323 (moved), legacy/trac#29324 (moved)

added component::applications/tor browser in Legacy / Trac gitlab-tb-tor-browser-build in Legacy / Trac owner::tbb-team in Legacy / Trac parent::29318 in Legacy / Trac priority::medium in Legacy / Trac severity::normal in Legacy / Trac status::new in Legacy / Trac tbb-rbm in Legacy / Trac type::defect in Legacy / Trac labels

Add magic gitlab keyword.

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

mentioned in issue legacy/trac#31828 (moved)

mentioned in issue legacy/trac#29323 (moved)

mentioned in issue legacy/trac#29324 (moved)

mentioned in issue legacy/trac#29322 (moved)

mentioned in issue legacy/trac#29318 (moved)

moved from legacy/trac#29321 (moved)

added Bug label and removed 1 deleted label

removed 1 deleted label

added Backlog label

added Next label and removed Backlog label

added Backlog label and removed Next label

removed Backlog label

removed Bug label

added Task Windows labels

added Roadmap::Future label

While we're at it we could look into building its dependencies as static libs and linking them directly into the tor daemon to reduce space. (We do this for Ricochet-Refresh releases)

It may even be the only option:

libtool: warning: undefined symbols not allowed in x86_64-w64-mingw32 shared libraries; building static only

(while compiling libevent)

marked this issue as related to #29318 (closed)

marked this issue as related to #31828 (closed)

assigned to @pierov

added Doing label

mentioned in merge request !503 (merged)

removed Roadmap::Future label

closed with merge request !503 (merged)

marked this issue as related to #40589 (closed)

removed Doing label