SquishTests: Tweak the handling of special clang

When expecting the clang from llvm used to build QC we
nowadays have to resolve symbolc links.

Change-Id: I54cfecc15d77f244eccd81d5cdd14ec7297e1eeb
Reviewed-by: David Schulz <david.schulz@qt.io>

tests/system/suite_general/tst_default_settings/test.py

@@ -39,6 +39,7 @@ def __checkKits__():
         internalClangExe = os.path.join(llvmForBuild, "bin", "clang")
         if platform.system() in ("Microsoft", "Windows"):
             internalClangExe += ".exe"
+        internalClangExe = os.path.realpath(internalClangExe) # clean symlinks
         if os.path.exists(internalClangExe):
             expectedCompilers.append(internalClangExe)
     foundCompilers = []