Merge branch 'upstream-KWSys' into update-kwsys

# By KWSys Upstream
* upstream-KWSys:
  KWSys 2020-07-24 (c3054d90)

Source/kwsys/Glob.hxx.in

@@ -126,8 +126,8 @@ protected:
   bool RecurseListDirs;
 
 private:
-  Glob(const Glob&);           // Not implemented.
-  void operator=(const Glob&); // Not implemented.
+  Glob(const Glob&) = delete;
+  void operator=(const Glob&) = delete;
 };
 
 } // namespace @KWSYS_NAMESPACE@

Source/kwsys/ProcessUNIX.c

@@ -2128,17 +2128,17 @@ static void kwsysProcessSetExitExceptionByIndex(kwsysProcess* cp, int sig,
 #endif
 #ifdef SIGABRT
     case SIGABRT:
-      KWSYSPE_CASE(Other, "Child aborted");
+      KWSYSPE_CASE(Other, "Subprocess aborted");
       break;
 #endif
 #ifdef SIGKILL
     case SIGKILL:
-      KWSYSPE_CASE(Other, "Child killed");
+      KWSYSPE_CASE(Other, "Subprocess killed");
       break;
 #endif
 #ifdef SIGTERM
     case SIGTERM:
-      KWSYSPE_CASE(Other, "Child terminated");
+      KWSYSPE_CASE(Other, "Subprocess terminated");
       break;
 #endif
 #ifdef SIGHUP

Source/kwsys/SystemTools.cxx

@@ -1453,7 +1453,7 @@ bool SystemTools::PathCygwinToWin32(const char* path, char* win32_path)
 
 bool SystemTools::Touch(const std::string& filename, bool create)
 {
-  if (!SystemTools::PathExists(filename)) {
+  if (!SystemTools::FileExists(filename)) {
     if (create) {
       FILE* file = Fopen(filename, "a+b");
       if (file) {

Source/kwsys/testProcess.c

@@ -450,24 +450,25 @@ static int runChild2(kwsysProcess* kp, const char* cmd[], int state,
       printf("The process is still executing.\n");
       break;
     case kwsysProcess_State_Expired:
-      printf("Child was killed when timeout expired.\n");
+      printf("Subprocess was killed when timeout expired.\n");
       break;
     case kwsysProcess_State_Exited:
-      printf("Child exited with value = %d\n", kwsysProcess_GetExitValue(kp));
+      printf("Subprocess exited with value = %d\n",
+             kwsysProcess_GetExitValue(kp));
       result = ((exception != kwsysProcess_GetExitException(kp)) ||
                 (value != kwsysProcess_GetExitValue(kp)));
       break;
     case kwsysProcess_State_Killed:
-      printf("Child was killed by parent.\n");
+      printf("Subprocess was killed by parent.\n");
       break;
     case kwsysProcess_State_Exception:
-      printf("Child terminated abnormally: %s\n",
+      printf("Subprocess terminated abnormally: %s\n",
              kwsysProcess_GetExceptionString(kp));
       result = ((exception != kwsysProcess_GetExitException(kp)) ||
                 (value != kwsysProcess_GetExitValue(kp)));
       break;
     case kwsysProcess_State_Disowned:
-      printf("Child was disowned.\n");
+      printf("Subprocess was disowned.\n");
       break;
     case kwsysProcess_State_Error:
       printf("Error in administrating child process: [%s]\n",

Source/kwsys/testSystemTools.cxx

@@ -422,6 +422,28 @@ static bool CheckFileOperations()
     res = false;
   }
 
+#if !defined(_WIN32)
+  std::string const testBadSymlink(testNewDir + "/badSymlink.txt");
+  std::string const testBadSymlinkTgt(testNewDir + "/missing/symlinkTgt.txt");
+  if (!kwsys::SystemTools::CreateSymlink(testBadSymlinkTgt, testBadSymlink)) {
+    std::cerr << "Problem with CreateSymlink for: " << testBadSymlink << " -> "
+              << testBadSymlinkTgt << std::endl;
+    res = false;
+  }
+
+  if (!kwsys::SystemTools::Touch(testBadSymlink, false)) {
+    std::cerr << "Problem with Touch (no create) for: " << testBadSymlink
+              << std::endl;
+    res = false;
+  }
+#endif
+
+  if (!kwsys::SystemTools::Touch(testNewDir, false)) {
+    std::cerr << "Problem with Touch (no create) for: " << testNewDir
+              << std::endl;
+    res = false;
+  }
+
   kwsys::SystemTools::Touch(testNewFile, true);
   if (!kwsys::SystemTools::RemoveADirectory(testNewDir)) {
     std::cerr << "Problem with RemoveADirectory for: " << testNewDir