* configure.ac: Removed OpenSC detection and options.

* acinclude.m4: Ditto.

* scdaemon.texi: Removed OpenSC specific options.

* app-p15.c: New.  Basic support for pkcs15 cards without OpenSC.
There are quite a couple of things missing but at least I can use
my old TCOS cards from the Aegypten-1 development for signing.
* app.c (select_application): Detect pkcs15 applications.
* Makefile.am (scdaemon_SOURCES): Removed card.c, card-common.h
and card-p15.c because they are now obsolete. Added app-p15.c.
Removed all OpenSC stuff.
* command.c (do_reset, open_card, cmd_serialno, cmd_learn)
(cmd_readcert, cmd_readkey, cmd_pksign, cmd_pkdecrypt): Removed
all special cases for the old card.c based mechanisms.
* scdaemon.c, apdu.c: Removed all special cases for OpenSC.

scd/app-common.h

@@ -175,7 +175,7 @@ int app_select_nks (app_t app);
 int app_select_dinsig (app_t app);
 
 /*-- app-p15.c --*/
-int app_select_p15 (app_t app);
+gpg_error_t app_select_p15 (app_t app);
 
 
 #endif