Revert everything related to Damien's work in 2008 (he will commit a new version soon).

Here are the reverted patches:
8c0d1003b0,
25a3114287,
9afbaf6342,
dc0005f4e1,
543190f2bc.

src/Makefile.am

@@ -23,23 +23,20 @@ AUTOMAKE_OPTIONS = subdir-objects
 
 # List directories in the order they must be built.
 # Keep tests at the end.
-SUBDIRS = misc ltlenv ltlast ltlvisit ltlparse internal \
-	  eltlenv eltlast eltlvisit eltlparse \
+SUBDIRS = misc ltlenv ltlast ltlvisit ltlparse \
           tgba tgbaalgos tgbaparse \
 	  evtgba evtgbaalgos evtgbaparse . \
-	  ltltest eltltest tgbatest evtgbatest sanity
+	  ltltest tgbatest evtgbatest sanity
 
 lib_LTLIBRARIES = libspot.la
 libspot_la_SOURCES =
 libspot_la_LDFLAGS = $(BUDDY_LDFLAGS) -no-undefined
 libspot_la_LIBADD =  \
   misc/libmisc.la \
+  ltlenv/libltlenv.la \
   ltlparse/libltlparse.la \
   ltlvisit/libltlvisit.la \
-  internal/libinternal.la \
-  eltlast/libeltlast.la \
-  eltlparse/libeltlparse.la \
-  eltlvisit/libeltlvisit.la \
+  ltlast/libltlast.la \
   tgba/libtgba.la \
   tgbaalgos/libtgbaalgos.la \
   tgbaparse/libtgbaparse.la \