* m4/gspnlib.m4: New file.

* configure.ac: Call AX_CHECK_GSPNLIB.
* Makefile.am (EXTRA_DIST): Add m4/gspnlib.m4.
* iface/gspn/Makefile.am (AM_CPPFLAGS): Add $(LIBGSPN_CPPFLAGS).
(libspotgspn_la_LIBADD, check_PROGRAMS, dottygspn_SOURCES,
dottygspn_LDADD): New variables.
* iface/gspn/gspn.hh (gspn_interface): New class.
(gspn_exeption): Take a string argument and adjust all callers.
(operator<<): Define for gspn_exeption.
* iface/gspn/gspn.cc (gspn_interface::gspn_interface,
gspn_interface::~gspn_interface): New.
* iface/gspn/gspnlib.h: Delete, it belongs to GSPN.
* iface/gspn/dottygspn.cc: New file.

Makefile.am

@@ -8,4 +8,10 @@ endif WITH_INCLUDED_LBTT
 SUBDIRS = $(MAYBE_BUDDY) $(MAYBE_LBTT) doc src wrap iface
 
 ACLOCAL_AMFLAGS = -I m4
-EXTRA_DIST = m4/gccwarn.m4 m4/pypath.m4 m4/buddy.m4 m4/lbtt.m4 HACKING
+EXTRA_DIST = \
+  m4/gccwarn.m4 \
+  m4/pypath.m4 \
+  m4/buddy.m4 \
+  m4/lbtt.m4 \
+  m4/gspnlib.m4 \
+  HACKING