Credit Kitware and csimsoft for their maintenance roles

Add maintenance credit to command-line "--version" output and the
cmake-gui "About" dialog.

Source/QtDialog/CMakeSetupDialog.cxx

@@ -807,10 +807,14 @@ void CMakeSetupDialog::doDeleteCache()
 
 void CMakeSetupDialog::doAbout()
 {
-  QString msg = tr("CMake %1\n"
-                "Using Qt %2\n"
-                "www.cmake.org");
-
+  QString msg = tr(
+    "CMake %1 (cmake.org).\n"
+    "CMake suite maintained by Kitware, Inc. (kitware.com).\n"
+    "Distributed under terms of the BSD 3-Clause License.\n"
+    "\n"
+    "CMake GUI maintained by csimsoft,\n"
+    "built using Qt %2 (qt-project.org).\n"
+    );
   msg = msg.arg(cmVersion::GetCMakeVersion());
   msg = msg.arg(qVersion());
 

Source/cmDocumentation.cxx

@@ -95,8 +95,12 @@ cmDocumentation::~cmDocumentation()
 //----------------------------------------------------------------------------
 bool cmDocumentation::PrintVersion(std::ostream& os)
 {
-  os << this->GetNameString() << " version "
-     << cmVersion::GetCMakeVersion() << "\n";
+  os <<
+    this->GetNameString() <<
+    " version " << cmVersion::GetCMakeVersion() << "\n"
+    "\n"
+    "CMake suite maintained by Kitware, Inc. (kitware.com).\n"
+    ;
   return true;
 }