StdIo: Init() automatically in Console()

Applications that initialize a `cm::StdIo::Console` immediately no
longer need to `cm::StdIo::Init` first.

Source/CPack/cpack.cxx

@@ -33,7 +33,6 @@
 #include "cmState.h"
 #include "cmStateSnapshot.h"
 #include "cmStdIoConsole.h"
-#include "cmStdIoInit.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmValue.h"
@@ -90,8 +89,6 @@ std::vector<cmDocumentationEntry> makeGeneratorDocs(
 // this is CPack.
 int main(int argc, char const* const* argv)
 {
-  cm::StdIo::Init();
-
   cm::StdIo::Console console;
 
   cmsys::Encoding::CommandLineArguments args =

Source/cmStdIoConsole.h

@@ -4,6 +4,8 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include "cmStdIoInit.h"
+
 #ifdef _WIN32
 #  include <memory>
 #endif
@@ -28,7 +30,7 @@ namespace StdIo {
  *
  * Destroy the instance of this to restore the original `streambuf`s.
  */
-class Console
+class Console : private Init
 {
 #ifdef _WIN32
   class Impl;

Source/cmakemain.cxx

@@ -34,7 +34,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmStdIoConsole.h"
-#include "cmStdIoInit.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmValue.h"
@@ -1142,8 +1141,6 @@ int do_open(int ac, char const* const* av)
 
 int main(int ac, char const* const* av)
 {
-  cm::StdIo::Init();
-
   cm::optional<cm::StdIo::Console> console = cm::StdIo::Console();
 
   cmsys::Encoding::CommandLineArguments args =

Source/ctest.cxx

@@ -14,7 +14,6 @@
 #include "cmInstrumentation.h"
 #include "cmInstrumentationQuery.h"
 #include "cmStdIoConsole.h"
-#include "cmStdIoInit.h"
 #include "cmSystemTools.h"
 
 #include "CTest/cmCTestLaunch.h"
@@ -167,8 +166,6 @@ cmDocumentationEntry const cmDocumentationOptions[] = {
 // this is a test driver program for cmCTest.
 int main(int argc, char const* const* argv)
 {
-  cm::StdIo::Init();
-
   cm::StdIo::Console console;
 
   cmsys::Encoding::CommandLineArguments encoding_args =