Setting MMTk as a third-party GC in the CI (#424)

Adding `WITH_THIRD_PARTY_GC=mmtk` to the MMTk CI to fix it after we
merged JuliaLang/julia#57176. Without that,
Julia will keep using the stock GC, even though `MMTK_PLAN` has been
set.

---------

Co-authored-by: Dilum Aluthge <[email protected]>

Author: udesou

pipelines/main/platforms/build_linux.arches

@@ -1,11 +1,11 @@
-# ROOTFS_IMAGE_NAME    TRIPLET                        ARCH           ARCH_ROOTFS    MAKE_FLAGS                                                                              TIMEOUT       ROOTFS_TAG    ROOTFS_HASH
-package_linux          i686-linux-gnu                 x86_64         i686           JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                   .             v6.00         a0c4756ee7827b3a75d4a62ff543315c1547e3d6
-package_linux          x86_64-linux-gnu               x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                   .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
-package_linux          x86_64-linux-gnuassert         x86_64         x86_64         FORCE_ASSERTIONS=1,LLVM_ASSERTIONS=1,JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror              .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
-package_linux          x86_64-linux-gnuprofiling      x86_64         x86_64         WITH_TRACY=1,WITH_ITTAPI=1,WITH_TIMING_COUNTS=1,JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror   .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
-package_linux          aarch64-linux-gnu              aarch64        aarch64        JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                   .             v6.00         e32c05f36d0a5bb0f94a17d99647f0b3352a8256
-package_linux          x86_64-linux-gnummtk          x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror,MMTK_PLAN=Immix,MMTK_MOVING=0                                .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
-# package_musl           x86_64-linux-musl              x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                   .             v6.00         948ca1e496231e4c280c236a3e9bb01c95c2cda5
+# ROOTFS_IMAGE_NAME    TRIPLET                        ARCH           ARCH_ROOTFS    MAKE_FLAGS                                                                                      TIMEOUT       ROOTFS_TAG    ROOTFS_HASH
+package_linux          i686-linux-gnu                 x86_64         i686           JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                           .             v6.00         a0c4756ee7827b3a75d4a62ff543315c1547e3d6
+package_linux          x86_64-linux-gnu               x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                           .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
+package_linux          x86_64-linux-gnuassert         x86_64         x86_64         FORCE_ASSERTIONS=1,LLVM_ASSERTIONS=1,JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                      .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
+package_linux          x86_64-linux-gnuprofiling      x86_64         x86_64         WITH_TRACY=1,WITH_ITTAPI=1,WITH_TIMING_COUNTS=1,JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror           .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
+package_linux          aarch64-linux-gnu              aarch64        aarch64        JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                           .             v6.00         e32c05f36d0a5bb0f94a17d99647f0b3352a8256
+package_linux          x86_64-linux-gnummtk           x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror,WITH_THIRD_PARTY_GC=mmtk,MMTK_PLAN=Immix,MMTK_MOVING=0    .             v6.00         4dcde853eb5baaa0a8f087b633eaf955dc94b5dc
+# package_musl           x86_64-linux-musl              x86_64         x86_64         JL_CFLAGS=-Werror,JL_CXXFLAGS=-Werror                                                         .             v6.00         948ca1e496231e4c280c236a3e9bb01c95c2cda5
 
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