* assuan/ChangeLog-old: Remove file.
* assuan/Makefile.am: Remove file.
* assuan/README.1st: Remove file.
* assuan/assuan-buffer.c: Remove file.
* assuan/assuan-defs.h: Remove file.
* assuan/assuan-handler.c: Remove file.
* assuan/assuan-listen.c: Remove file.
* assuan/assuan-pipe-server.c: Remove file.
* assuan/assuan-util.c: Remove file.
* assuan/assuan.h: Remove file.
* assuan/mkerrors: Remove file.
* configure.ac: Check for libgpg-error and libassuan.
(COMMON_CFLAGS): Add $GPG_ERROR_CFLAGS and $LIBASSUAN_CFLAGS.
(COMMAND_LIBS): Add $GPG_ERROR_LIBS and $LIBASSUAN_LIBS.
(GPG_ERR_ENABLE_GETTEXT_MACROS): Define this macro.
(GPG_ERR_ENABLE_ERRNO_MACROS): Likewise.
(GNUPG_LIBASSUAN_VERSION): Likewise.
(AC_CONFIG_FILES): Don't generate assuan/Makefile.
(config.h): Define GPG_ERR_SOURCE_DEFAULT.
* Makefile.am (SUBDIRS): Remove assuan.
* curses/Makefile.am (LDADD): Remove ../assuan/libassuan.a.
* gnome3/Makefile.am (AM_CPPFLAGS): Remove -I$(top_srcdir)/assuan.
(LDADD): Remove ../assuan/libassuan.a.
* gtk+-2/Makefile.am (LDADD): Remove ../assuan/libassuan.a.
* pinentry/Makefile.am: Remove -I$(top_srcdir)/assuan.
* qt4/Makefile.am (AM_CPPFLAGS): Remove -I$(top_srcdir)/assuan.
(pinentry_qt4_LDADD): Remove $(top_builddir)/assuan/libassuan.a.
* tty/Makefile.am (LDADD): Remove ../assuan/libassuan.a.
* gnome3/pinentry-gnome3.c: Include <assuan.h>, not "assuan.h".
Replace ASSUAN_General_Error, etc. with gpg_error or
gpg_error_from_syserror.
* pinentry/pinentry-curses.c: Likewise.
* pinentry/pinentry.c: Likewise.
(pinentry_assuan_reset_handler): Change return type to gpg_error_t.
Change type of argument CTX from ASSUAN_CONTEXT to assuan_context_t.
Return 0.
(pinentry_inq_quality): Change variable CTX's type from ASSUAN_CONTEXT
to assuan_context_t.
(assuan_malloc_hooks): New variable.
(pinentry_init): Call gpgrt_check_version.  Change use of
assuan_set_malloc_hooks to match libassuan's semantics.
(option_handler): Return a gpg_error_t, not an int.  Replace use of
ASSUAN_Out_Of_Core, etc. with gpg_error or gpg_error_from_syserror.
(cmd_setdesc): Return a gpg_error_t, not an int.  Change argument
CTX's type from ASSUAN_CONTEXT to assuan_context_t.  Replace use of
ASSUAN_Out_Of_Core, etc. with gpg_error or gpg_error_from_syserror.
GPG_ERR_ENOMEM), etc.
(cmd_setprompt): Likewise.
(cmd_setkeyinfo): Likewise.
(cmd_setrepeat): Likewise.
(cmd_setrepeaterror): Likewise.
(cmd_seterror): Likewise.
(cmd_setok): Likewise.
(cmd_setnotok): Likewise.
(cmd_setcancel): Likewise.
(cmd_settimeout): Likewise.
(cmd_settitle): Likewise.
(cmd_setqualitybar): Likewise.
(cmd_setqualitybar_tt): Likewise.
(cmd_getpin): Likewise.
(cmd_confirm): Likewise.
(cmd_message): Likewise.
(cmd_getinfo): Likewise.
(cmd_clear_passphrase): Likewise.
(register_commands): Likewise.  Change use of assuan_register_command
to match libassuan's semantics.
(pinentry_loop2): Change variable RC's type from int to gpg_error_t.
Change variable CTX's type from ASSUAN_CONTEXT to assuan_context_t.
Use assuan_new to initialize CTX.  Change use of
assuan_init_pipe_server to match libassuan's semantics.  Replace use
of assuan_strerror with gpg_strerror.  Call assuan_release instead of
assuan_deinit_server.