Add QNX 7.1 remote toolchain support and address PR #12 review comments

[Subramanian-K812]

Summary

Addresses all review comments from PR #12
Adds proper QNX 7.1 (ProAI 8650) build support using only remote dependencies
and git_override — no local path overrides.

Changes

MODULE.bazel

• Replaced local_path_override → git_override for score_bazel_cpp_toolchains
  at commit 9a9f063 (Subramanian-K812_add_qnx71_aarch64_sdp_support)

bazel_common/score_qnx_toolchains.MODULE.bazel

• Removed invalid qcc.sdp() block
• Restored score_qcc_aarch64_toolchain → QNX 8.0 (sdp_version = "8.0.0", GCC 12.2.0)
• Added new score_qcc_aarch64_qnx71_toolchain → QNX 7.1 (sdp_version = "7.1.0",
  GCC 8.3.0) with use_default_package = True and license_info_variable

.bazelrc

• Restored qnx-aarch64 config to QNX 8.0 platforms and toolchains
• Added qnx71-aarch64 config for ProAI 8650 QNX 7.1 with:
  • --action_env=QNXLM_LICENSE_FILE (forwards FLEXlm license into Bazel sandbox)
  • --sandbox_writable_path=/var/tmp (required by QNX license daemon)
  • Correct aarch64-qnx-sdp_7.1.0 platform and toolchain labels

third_party/qnx710/

• Removed BUILD.bazel and qnx710_sdp.BUILD (dead code — no longer referenced
  since use_default_package=True handles the SDP via score_bazel_cpp_toolchains)

External Dependencies (new branches)

Repo	Branch	Commit	Purpose
qorix-group/bazel_cpp_toolchains	Subramanian-K812_add_qnx71_aarch64_sdp_support	9a9f063	VERSION_MATRIX entry for QNX 7.1 SDP, fixed sdp.BUILD target names (:qcc→:cc, :qpp→:cxx), removed GCC 8.3 incompatible flag -Wno-error=mismatched-new-delete
qorix-group/score-crates	Subramanian-K812_add_qnx71_iceoryx2_patches	8f29fa5	iceoryx2 pipe fallback patches for QNX 7.1 (no AF_UNIX socket pair support on SA8650)

SDP Path:

https://github.com/qorix-group/bazel_cpp_toolchains/releases/download/v0.1.0/qnx710_sdp.tar.gz

Build Verification

# QNX 7.1 — requires QNXLM_LICENSE_FILE set
export QNXLM_LICENSE_FILE=/path/to/license.dat  # or 27000@server
bazel --output_base=build/qnx71-aarch64 build --config=qnx71-aarch64 //showcases/standalone:comm
# Result: Build completed successfully, 956 total actions

[PiotrKorkus]

we need another one for 7.1 as well

[Subramanian-K812]

added

[PiotrKorkus]

shouldnt be 7.1 toolchain as well?

[Subramanian-K812]

I could see only toolchain for aarch64-unknown-nto-qnx800 (QNX 8.0) present actually and no aarch64-unknown-nto-qnx710 binary for QNX 7.1 in eclipse-score/ferrocene_toolchain_builder releases. Is there any other way to address this?

[PiotrKorkus]

ifs for 7.1 from score_qnx_aarch64_ifs_toolchain shall be included as well, or?

[Subramanian-K812]

Added

[PiotrKorkus]

this file should be not needed, changes should be applied directly to repo https://github.com/eclipse-score/bazel_cpp_toolchains + git_override

[Subramanian-K812]

Removed.