Deprecate error codes that aren't currently in use.

* subversion/include/svn_error_codes.h
  Mark unused error codes as deprecated.
Index: subversion/include/svn_error_codes.h
===================================================================
--- subversion/include/svn_error_codes.h	(revision 9563)
+++ subversion/include/svn_error_codes.h	(working copy)
@@ -145,6 +145,7 @@
 
   /* validation ("BAD_FOO") errors */
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_BAD_CONTAINING_POOL,
               SVN_ERR_BAD_CATEGORY_START + 0,
               "Bad parent pool passed to svn_make_pool()")
@@ -177,6 +178,7 @@
               SVN_ERR_XML_CATEGORY_START + 0,
               "No such XML tag attribute")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_XML_MISSING_ANCESTRY,
               SVN_ERR_XML_CATEGORY_START + 1,
               "<delta-pkg> is missing ancestry")
@@ -207,10 +209,12 @@
               SVN_ERR_IO_CATEGORY_START + 3,
               "Ran out of unique names")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_IO_PIPE_FRAME_ERROR,
               SVN_ERR_IO_CATEGORY_START + 4,
               "Framing error in pipe protocol")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_IO_PIPE_READ_ERROR,
               SVN_ERR_IO_CATEGORY_START + 5,
               "Read error in pipe")
@@ -269,14 +273,17 @@
               SVN_ERR_WC_CATEGORY_START + 0,
               "Obstructed update")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_WC_UNWIND_MISMATCH,
               SVN_ERR_WC_CATEGORY_START + 1,
               "Mismatch popping the WC unwind stack")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_WC_UNWIND_EMPTY,
               SVN_ERR_WC_CATEGORY_START + 2,
               "Attempt to pop empty WC unwind stack")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_WC_UNWIND_NOT_EMPTY,
               SVN_ERR_WC_CATEGORY_START + 3,
               "Attempt to unlock with non-empty unwind stack")
@@ -289,6 +296,7 @@
               SVN_ERR_WC_CATEGORY_START + 5,
               "Working copy not locked")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_WC_INVALID_LOCK,
               SVN_ERR_WC_CATEGORY_START + 6,
               "Invalid lock")
@@ -309,6 +317,7 @@
               SVN_ERR_WC_CATEGORY_START + 10,
               "Can't find a working copy path")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_WC_NOT_UP_TO_DATE,
               SVN_ERR_WC_CATEGORY_START + 11,
               "Working copy is not up-to-date")
@@ -419,6 +428,7 @@
               SVN_ERR_FS_CATEGORY_START + 14,
               "Filesystem has no such node-rev-id")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_FS_NOT_ID,
               SVN_ERR_FS_CATEGORY_START + 15,
               "String does not represent a node or node-rev-id")
@@ -493,6 +503,7 @@
 
   /* repos errors */
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_REPOS_LOCKED,
               SVN_ERR_REPOS_CATEGORY_START + 0,
               "The repository is locked, perhaps for db recovery")
@@ -505,6 +516,7 @@
               SVN_ERR_REPOS_CATEGORY_START + 2,
               "Incorrect arguments supplied")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_REPOS_NO_DATA_FOR_REPORT,
               SVN_ERR_REPOS_CATEGORY_START + 3,
               "A report cannot be generated because no data was supplied")
@@ -535,6 +547,7 @@
               SVN_ERR_RA_CATEGORY_START + 1,
               "Authorization failed")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_RA_UNKNOWN_AUTH,
               SVN_ERR_RA_CATEGORY_START + 2,
               "Unknown authorization method")
@@ -596,6 +609,7 @@
 
   /* ra_local errors */
   
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_RA_LOCAL_REPOS_NOT_FOUND,
               SVN_ERR_RA_LOCAL_CATEGORY_START + 0,
               "Couldn't find a repository")
@@ -617,6 +631,7 @@
               SVN_ERR_RA_SVN_CATEGORY_START + 2,
               "Network connection closed unexpectedly")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_RA_SVN_IO_ERROR,
               SVN_ERR_RA_SVN_CATEGORY_START + 3,
               "Network read/write error")
@@ -637,6 +652,7 @@
 
        /* this error can be used when an auth provider doesn't have
           the creds, but no other "real" error occurred. */
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_AUTHN_CREDS_UNAVAILABLE,
               SVN_ERR_AUTHN_CATEGORY_START + 0,
               "Credential data unavailable")
@@ -645,10 +661,12 @@
               SVN_ERR_AUTHN_CATEGORY_START + 1,
               "No authentication provider available")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_AUTHN_PROVIDERS_EXHAUSTED,
               SVN_ERR_AUTHN_CATEGORY_START + 2,
               "All authentication providers exhausted")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_AUTHN_CREDS_NOT_SAVED,
               SVN_ERR_AUTHN_CATEGORY_START + 3,
               "All authentication providers exhausted")
@@ -766,6 +784,7 @@
               SVN_ERR_MISC_CATEGORY_START + 0,
               "A problem occurred; see later errors for details")
 
+/** @deprecated Provided for backward compatibility with the 1.0.0 API. */
   SVN_ERRDEF (SVN_ERR_PLUGIN_LOAD_FAILURE,
               SVN_ERR_MISC_CATEGORY_START + 1,
               "Failure loading plugin")
