Various fixes for Rust on MIPS

Bug-Debian: https://bugs.debian.org/881845
Last-Update: 2020-03-23

Gbp-Pq: Name u-mips-fixes.diff

this test is new in 1.40 and the failure is present on many

Bug: https://github.com/rust-lang/rust/issues/67242

previous rust versions without users having complained or noticed, so
just ignore the failure until upstream fixes it

Gbp-Pq: Name u-tests-ignore-arm.patch

u-make-tests-work-without-rpath

Forwarded: TODO

Gbp-Pq: Name u-make-tests-work-without-rpath.patch

Don't split dwarf debug for a fully-reproducible build

Bug: https://github.com/rust-lang/rust/issues/34902

Gbp-Pq: Name u-reproducible-build.patch

u-backtrace-373

Bug: https://github.com/rust-lang/rust/issues/77410

Gbp-Pq: Name u-backtrace-373.patch

u-update-version-check

Bug: https://github.com/rust-lang/rust/issues/79010

Gbp-Pq: Name u-update-version-check.patch

u-ignore-gdb-10-failures

Bug: https://github.com/rust-lang/rust/issues/79009

Gbp-Pq: Name u-ignore-gdb-10-failures.patch

rustc (1.48.0+dfsg1-2) unstable; urgency=medium

  * Enable +xgot on mips64*, see upstream #52108 for details.

[dgit import unpatched rustc 1.48.0+dfsg1-2]

Import rustc_1.48.0+dfsg1-2.debian.tar.xz

[dgit import tarball rustc 1.48.0+dfsg1-2 rustc_1.48.0+dfsg1-2.debian.tar.xz]

Import rustc_1.48.0+dfsg1.orig.tar.xz

[dgit import orig rustc_1.48.0+dfsg1.orig.tar.xz]