Quiet some LLVM debug info tests (#27810)

Quiets some LLVM debug info tests that have been causing configs to fail
due to slight variances in string printing on various platforms

This PR also adds some extra logging to `start_test` when executing
`SKIPIF`s

[Reviewed by @DanilaFe]

Author: jabraham17

test/llvm/debugInfo/lldb/SKIPIF

@@ -5,7 +5,7 @@ if command -v lldb >/dev/null ; then
   # Sept 10, 2025: skip if lldb does not have python support
   # required for pretty printing which affects the output of the tests
   python_path=$(lldb --python-path 2>/dev/null)
-  if [ -z "$python_path" ]; then
+  if [[ -z "$python_path" || ! -x "$python_path" ]]; then
     echo "True"
   else
     echo "False"

test/llvm/debugInfo/lldb/basicTypes.skipif

@@ -1,3 +1,7 @@
+CHPL_LLVM_VERSION==14
+CHPL_LLVM_VERSION==15
+CHPL_LLVM_VERSION==16
+CHPL_LLVM_VERSION==17
 # this can remove too much of the debug info
 COMPOPTS <= --fast
 # baseline testing has extra call_temps left behind that mess up the good file

util/test/start_test.py

@@ -299,6 +299,7 @@ def test_directory(test, test_type):
                 skip_test = False
                 if os.path.isfile("SKIPIF"):
                     try:
+                        logger.write('[Checking SKIPIF]')
                         skip_test = process_skipif_output(run_command([test_env, "SKIPIF"]).strip())
                         # check output and skip if true
                         if skip_test == "1" or skip_test == "True":