config-time failure not reported as error by runsuite_wrapper

In a PR #4309 I broke the AArch64 build by forgetting to include a new file. But it was reported as green:

39.178.83.194:8080/job/DynamoRIO-AArch64-Precommit/1382/console

CMake Error: Cannot determine link language for target "drmemfuncs".
CMake Error in core/CMakeLists.txt:
  Exporting the target "drmemfuncs" is not allowed since its linker language
  cannot be determined
Command exited with the value: 1
Error(s) when configuring the project

CMake Error at /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/suite/runsuite_common_post.cmake:118 (file):
  file failed to open for reading (No such file or directory):

    /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/build/xml:results/___debug-internal-64___Experimental___XML___Build.xml
Call Stack (most recent call first):
  /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/suite/runsuite.cmake:545 (include)

CMake Error at /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/suite/runsuite_common_post.cmake:118 (file):
  file failed to open for reading (No such file or directory):

    /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/build/xml:results/___release-external-64___Experimental___XML___Build.xml
Call Stack (most recent call first):
  /var/lib/jenkins/.jenkins/workspace/DynamoRIO-AArch64-Precommit/suite/runsuite.cmake:545 (include)

So it did indeed fail. But the wrapper script fails to detect the config-time failure as an overall error (too loose in ignoring cross-arch build attempts in multi-build setup?) and it showed up green. Xref test failures not being reported on Mac: #4022, but I think that's completely different.