sm,common: Move ksba reader and writer support to common/.

* sm/base64.c: Rename to ...
* common/ksba-io-support.c: this.
* common/ksba-io-support.h: New.
* common/Makefile.am (common_sources): Add new files.
* sm/Makefile.am (gpgsm_SOURCES): Remove base64.c

Signed-off-by: Werner Koch <wk@gnupg.org>

common/Makefile.am

@@ -91,7 +91,9 @@ common_sources = \
 	exectool.c exectool.h \
 	server-help.c server-help.h \
 	name-value.c name-value.h \
-	recsel.c recsel.h
+	recsel.c recsel.h \
+	ksba-io-support.c ksba-io-support.h
+
 
 if HAVE_W32_SYSTEM
 common_sources += w32-reg.c

common/ksba-io-support.c

@@ -1,4 +1,4 @@
-/* base64.c
+/* kska-io-support.c - Supporting functions for ksba reader and writer
  * Copyright (C) 2001, 2003, 2010 Free Software Foundation, Inc.
  *
  * This file is part of GnuPG.
@@ -26,7 +26,7 @@
 #include <time.h>
 #include <assert.h>
 
-#include "gpgsm.h"
+#include "../sm/gpgsm.h"
 
 
 #include <ksba.h>

common/ksba-io-support.h

@@ -0,0 +1,33 @@
+/* ksba-io-support.h - Supporting functions for ksba reader and writer
+ * Copyright (C) 2017  Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either
+ *
+ *   - the GNU Lesser General Public License as published by the Free
+ *     Software Foundation; either version 3 of the License, or (at
+ *     your option) any later version.
+ *
+ * or
+ *
+ *   - the GNU General Public License as published by the Free
+ *     Software Foundation; either version 2 of the License, or (at
+ *     your option) any later version.
+ *
+ * or both in parallel, as here.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GNUPG_KSBA_IO_SUPPORT_H
+#define GNUPG_KSBA_IO_SUPPORT_H
+
+#endif /*GNUPG_KSBA_IO_SUPPORT_H*/

sm/Makefile.am

@@ -38,7 +38,6 @@ gpgsm_SOURCES = \
 	call-agent.c \
 	call-dirmngr.c \
 	fingerprint.c \
-	base64.c \
 	certlist.c \
 	certdump.c \
 	certcheck.c \