add more debugging

Author: bnbarham

test/lit.cfg

@@ -1329,7 +1329,9 @@ if run_vendor == 'apple':
          "-Xlinker -headerpad_max_install_names " +  
          "-Xlinker -rpath -Xlinker /usr/lib/swift %s ")%
         (xcrun_prefix, config.swiftc, target_options, config.swift_driver_test_options))
+    print(f"Set target_swiftc_driver in apple block to '{config.target_swiftc_driver}'")
     config.swiftc_driver_stdlib_target = config.target_swiftc_driver
+    print(f"Set swiftc_driver_stdlib_target in apple block to '{config.swiftc_driver_stdlib_target}'")
     config.target_clang = (
         "%s %s %s" %
         (xcrun_prefix, config.clangxx, config.target_cc_options))
@@ -1468,10 +1470,12 @@ elif run_os in ['windows-msvc']:
                                             config.resource_dir_opt, mcp_opt,    \
                                             config.swift_system_overlay_opt,     \
                                             config.swift_driver_test_options))
+    print(f"Set target_swiftc_driver in windows block to '{config.target_swiftc_driver}'")
     config.swiftc_driver_stdlib_target =                                         \
             ('%r -target %s %s %s %s' % (config.swiftc, config.variant_triple,   \
                                          config.resource_dir_opt, mcp_opt,       \
                                          config.swift_driver_test_options))
+    print(f"Set swiftc_driver_stdlib_target in windows block to '{config.swiftc_driver_stdlib_target}'")
     config.target_swift_modulewrap =                                             \
             ('%r -modulewrap -target %s' % (config.swiftc, config.variant_triple))
     config.target_swift_emit_pcm =                                               \
@@ -1599,7 +1603,9 @@ elif (run_os in ['linux-gnu', 'linux-gnueabihf', 'freebsd', 'openbsd', 'windows-
     config.target_swiftc_driver = (
         "%s -target %s -toolchain-stdlib-rpath %s %s %s" %
         (config.swiftc, config.variant_triple, config.resource_dir_opt, mcp_opt, config.swift_driver_test_options))
+    print(f"Set target_swiftc_driver in linux block to '{config.target_swiftc_driver}'")
     config.swiftc_driver_stdlib_target = config.target_swiftc_driver
+    print(f"Set swiftc_driver_stdlib_target in linux block to '{config.swiftc_driver_stdlib_target}'")
     config.target_swift_modulewrap = (
         '%s -modulewrap -target %s' %
         (config.swiftc, config.variant_triple))
@@ -1718,7 +1724,9 @@ elif run_os == 'linux-androideabi' or run_os == 'linux-android':
         '-tools-directory', tools_directory,
         config.resource_dir_opt, mcp_opt,
         config.swift_driver_test_options])
+    print(f"Set target_swiftc_driver in android block to '{config.target_swiftc_driver}'")
     config.swiftc_driver_stdlib_target = config.target_swiftc_driver
+    print(f"Set swiftc_driver_stdlib_target in android block to '{config.swiftc_driver_stdlib_target}'")
     config.target_swift_modulewrap = ' '.join([
         config.swiftc, '-modulewrap',
         '-target', config.variant_triple])
@@ -1786,7 +1794,9 @@ elif run_os == 'wasi':
     config.target_swiftc_driver = (
         "%s -target %s -toolchain-stdlib-rpath %s %s" %
         (config.swiftc, config.variant_triple, config.resource_dir_opt, mcp_opt))
+    print(f"Set target_swiftc_driver in wasi block to '{config.target_swiftc_driver}'")
     config.swiftc_driver_stdlib_target = config.target_swiftc_driver
+    print(f"Set swiftc_driver_stdlib_target in wasi block to '{config.swiftc_driver_stdlib_target}'")
     config.target_swift_modulewrap = (
         '%s -modulewrap -target %s' %
         (config.swiftc, config.variant_triple))
@@ -2504,7 +2514,9 @@ config.substitutions.append(('%target-swift-reflection-test', config.target_swif
 
 config.substitutions.append(('%target-swift-reflection-dump', '{} {} {}'.format(config.swift_reflection_dump, '-arch', run_cpu)))
 config.substitutions.append(('%target-swiftc_driver', config.target_swiftc_driver))
+print(f"Substituting target-swiftc_driver for '{config.target_swiftc_driver}'")
 config.substitutions.append(('%swiftc_driver-stdlib-target', config.swiftc_driver_stdlib_target))
+print(f"Substituting swiftc_driver-stdlib-target for '{config.swiftc_driver_stdlib_target}'")
 
 config.substitutions.append(('%target-swift-remoteast-test-with-sdk',
                              '%s %s -sdk %r' %