Make gpg-error replacement defines more robust.

* configure.ac (AH_BOTTOM): Move GPG_ERR_ replacement defines to ...
* src/gcrypt-int.h: new file.
* src/visibility.h, src/cipher.h: Replace gcrypt.h by gcrypt-int.h.
* tests/: Ditto for all test files.
--

Defining newer gpg-error codes in config.h was not a good idea,
because config.h is usually included before gpg-error.h and thus
gpg-error.h would be double defines to lead to faulty code there like

  typedef enum
    {
      [...]
      191 = 191,
      [...]
    };

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/keygen.c b/tests/keygen.c
index 05593c39..1d1b43ea 100644
--- a/tests/keygen.c
+++ b/tests/keygen.c
@@ -25,7 +25,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
-#include "../src/gcrypt.h"
+#include "../src/gcrypt-int.h"