* gpg-agent.c (handle_connections): Need to check for events if

select returns with -1.

* tools.texi (gpg-connect-agent): New.

* app-openpgp.c (get_one_do): Never try to get a non cacheable
object from the cache.
(get_one_do): Add new arg to return an error code.  Changed all
callers.
(do_getattr): Let it return a proper error code.

* app.c (select_application): Return an error code and the
application context in an new arg.
* command.c (open_card): Adjusted for that.  Don't use the
fallback if no card is present.  Return an error if the card has
been removed without a reset.
(do_reset, cmd_serialno): Clear that error flag.
(TEST_CARD_REMOVAL): New. Use it with all command handlers.

* scdaemon.c (ticker_thread): Termintate if a shutdown is pending.

* apdu.c: Added some PCSC error codes.
(pcsc_error_to_sw): New.
(reset_pcsc_reader, pcsc_get_status, pcsc_send_apdu)
(open_pcsc_reader): Do proper error code mapping.

* gpg-connect-agent.c: New.
* Makefile.am: Add it.

tools/Makefile.am

@@ -24,15 +24,13 @@ EXTRA_DIST = Manifest watchgnupg.c \
 AM_CPPFLAGS =  -I$(top_srcdir)/intl -I$(top_srcdir)/common
 include $(top_srcdir)/am/cmacros.am
 
-# Note, that we require GPG_ERROR_CFLAGS only because some share header files
-# require that file.  It is not actually used in gpgconf.
-AM_CFLAGS = @GPG_ERROR_CFLAGS@
+AM_CFLAGS = $(GPG_ERROR_CFLAGS) $(LIBASSUAN_CFLAGS)
 
 sbin_SCRIPTS = addgnupghome
 
 bin_SCRIPTS = gpgsm-gencert.sh
 
-bin_PROGRAMS = gpgconf
+bin_PROGRAMS = gpgconf gpg-connect-agent
 if !HAVE_W32_SYSTEM
 bin_PROGRAMS += watchgnupg
 endif
@@ -41,4 +39,9 @@ gpgconf_SOURCES = gpgconf.c gpgconf.h gpgconf-comp.c no-libgcrypt.c
 
 gpgconf_LDADD = ../jnlib/libjnlib.a ../common/libcommon.a @LIBINTL@
 
-watchgnupg_SOURCES = watchgnupg.c
+watchgnupg_SOURCES = watchgnupg.c 
+
+gpg_connect_agent_SOURCES = gpg-connect-agent.c no-libgcrypt.c
+gpg_connect_agent_LDADD = ../jnlib/libjnlib.a ../common/libcommon.a \
+                          $(LIBASSUAN_LIBS) $(GPG_ERROR_LIBS) $(LIBINTL)
+