Port pgo.sh to Python

Author: Kobzol

.github/workflows/ci.yml

@@ -439,7 +439,7 @@ jobs:
           - name: dist-x86_64-msvc
             env:
               RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc --host=x86_64-pc-windows-msvc --target=x86_64-pc-windows-msvc --enable-full-tools --enable-profiler --set rust.lto=thin"
-              SCRIPT: PGO_HOST=x86_64-pc-windows-msvc src/ci/pgo.sh python x.py dist bootstrap --include-default-paths
+              SCRIPT: PGO_HOST=x86_64-pc-windows-msvc python src/ci/stage-build.py python x.py dist bootstrap --include-default-paths
               DIST_REQUIRE_ALL_TOOLS: 1
             os: windows-latest-xl
           - name: dist-i686-msvc

src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile

@@ -81,7 +81,7 @@ ENV RUST_CONFIGURE_ARGS \
       --set rust.jemalloc \
       --set rust.use-lld=true \
       --set rust.lto=thin
-ENV SCRIPT ../src/ci/pgo.sh python3 ../x.py dist \
+ENV SCRIPT python3 ../src/ci/stage-build.py python3 ../x.py dist \
     --host $HOSTS --target $HOSTS \
     --include-default-paths \
     build-manifest bootstrap

src/ci/github-actions/ci.yml

@@ -676,7 +676,7 @@ jobs:
                 --enable-full-tools
                 --enable-profiler
                 --set rust.lto=thin
-              SCRIPT: PGO_HOST=x86_64-pc-windows-msvc src/ci/pgo.sh python x.py dist bootstrap --include-default-paths
+              SCRIPT: PGO_HOST=x86_64-pc-windows-msvc python src/ci/stage-build.py python x.py dist bootstrap --include-default-paths
               DIST_REQUIRE_ALL_TOOLS: 1
             <<: *job-windows-xl