Merge bitcoin#29091: build: Bump g++ minimum supported version to 11

fa5844f Remove unused g++-10 workaround (MarcoFalke)
fa8409e build: Bump g++ minimum supported version to 11 (MarcoFalke)

Pull request description:

  This drops support for vanilla Ubuntu Focal 20.04 and Debian (Oldstable) Bullseye, compiling from source. Users on those operating systems would have to stick with a pre-compiled release, a previous release branch of Bitcoin Core, upgrade their system, compile their own compiler, or use a non-vanilla PPA or package manager.

  Otherwise, g++-11 is offered by common distributions:

  * https://packages.ubuntu.com/jammy/g++ (`g++-11`)
  * https://packages.debian.org/bookworm/g++ (`g++-12`)
  * FreeBSD 12/13 ships with g++ 12
  * CentOS-like 9 ships with g++ 11
  * OpenSuse Tumbleweed ships with g++ 13 https://software.opensuse.org/package/gcc13-c++ (No idea about OpenSuse Leap)

ACKs for top commit:
  TheCharlatan:
    ACK fa5844f
  fanquake:
    ACK fa5844f

Tree-SHA512: fc72d3a53956a0a4a6475ebf56b5fce76c3c4c793ed8e774327cad2b0f307d2d1c8aeafe2a414a7eb51f8de6d4bb78d30b8f60bf6e383234079851e72015c6e3

ci/test/00_setup_env_native_previous_releases.sh

@@ -7,10 +7,10 @@
 export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_native_previous_releases
-export CI_IMAGE_NAME_TAG="docker.io/debian:bullseye"
-# Use minimum supported python3.9 and gcc-10, see doc/dependencies.md
-export PACKAGES="gcc-10 g++-10 python3-zmq"
-export DEP_OPTS="NO_UPNP=1 NO_NATPMP=1 DEBUG=1 CC=gcc-10 CXX=g++-10"
+export CI_IMAGE_NAME_TAG="docker.io/ubuntu:22.04"
+# Use minimum supported python3.9 (or best effort 3.10) and gcc-11, see doc/dependencies.md
+export PACKAGES="gcc-11 g++-11 python3-zmq"
+export DEP_OPTS="NO_UPNP=1 NO_NATPMP=1 DEBUG=1 CC=gcc-11 CXX=g++-11"
 export TEST_RUNNER_EXTRA="--previous-releases --coverage --extended --exclude feature_dbcrash"  # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash
 export RUN_UNIT_TESTS_SEQUENTIAL="true"
 export RUN_UNIT_TESTS="false"

doc/dependencies.md

@@ -9,7 +9,7 @@ You can find installation instructions in the `build-*.md` file for your platfor
 | [Autoconf](https://www.gnu.org/software/autoconf/) | [2.69](https://github.com/bitcoin/bitcoin/pull/17769) |
 | [Automake](https://www.gnu.org/software/automake/) | [1.13](https://github.com/bitcoin/bitcoin/pull/18290) |
 | [Clang](https://clang.llvm.org) | [14.0](https://github.com/bitcoin/bitcoin/pull/29208) |
-| [GCC](https://gcc.gnu.org) | [10.1](https://github.com/bitcoin/bitcoin/pull/28348) |
+| [GCC](https://gcc.gnu.org) | [11.1](https://github.com/bitcoin/bitcoin/pull/29091) |
 | [Python](https://www.python.org) (scripts, tests) | [3.9](https://github.com/bitcoin/bitcoin/pull/28211) |
 | [systemtap](https://sourceware.org/systemtap/) ([tracing](tracing.md))| N/A |
 

src/util/fs_helpers.cpp

@@ -249,20 +249,9 @@ fs::path GetSpecialFolderPath(int nFolder, bool fCreate)
 
 bool RenameOver(fs::path src, fs::path dest)
 {
-#ifdef __MINGW64__
-    // This is a workaround for a bug in libstdc++ which
-    // implements fs::rename with _wrename function.
-    // This bug has been fixed in upstream:
-    //  - GCC 10.3: 8dd1c1085587c9f8a21bb5e588dfe1e8cdbba79e
-    //  - GCC 11.1: 1dfd95f0a0ca1d9e6cbc00e6cbfd1fa20a98f312
-    // For more details see the commits mentioned above.
-    return MoveFileExW(src.wstring().c_str(), dest.wstring().c_str(),
-                       MOVEFILE_REPLACE_EXISTING) != 0;
-#else
     std::error_code error;
     fs::rename(src, dest, error);
     return !error;
-#endif
 }
 
 /**