g13: Move 'call-gpg.c' to common.

* common/Makefile.am (common_sources): Add files.
* g13/call-gpg.c: Move to 'common' and adapt slightly.  Add a
parameter to let callees override the gpg program to execute.
* g13/call-gpg.h: Likewise.
* g13/Makefile.am (g13_SOURCES): Drop files.
* g13/create.c (encrypt_keyblob): Hand in the gpg program to execute.
* g13/mount.c (decrypt_keyblob): Likewise.

Signed-off-by: Justus Winter <justus@g10code.com>

common/call-gpg.h

@@ -0,0 +1,37 @@
+/* call-gpg.h - Defs for the communication with GPG
+ * Copyright (C) 2009 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef G13_CALL_GPG_H
+#define G13_CALL_GPG_H
+
+#include "strlist.h"
+
+typedef struct server_control_s *ctrl_t;
+
+gpg_error_t gpg_encrypt_blob (ctrl_t ctrl, const char *gpg_program,
+                              const void *plain, size_t plainlen,
+                              strlist_t keys,
+                              void **r_ciph, size_t *r_ciphlen);
+gpg_error_t gpg_decrypt_blob (ctrl_t ctrl, const char *gpg_program,
+			      const void *ciph, size_t ciphlen,
+                              void **r_plain, size_t *r_plainlen);
+
+
+
+#endif /*G13_CALL_GPG_H*/