autotools: many fixups, SUN->SOLARIS, typos, etc

This should allow an autoregen and ./confiure to work.  We only
generate Makefiles for lib/* and ./Makefile for now.  We'll ad more as
we go along.

Make still fails as we need to figure out TT - tirpc lib, rpcgen,
etc.  But it's a start!

cde/lib/DtTerm/Makefile.am

@@ -6,14 +6,14 @@ lib_LTLIBRARIES = libDtTerm.la
 
 libDtTerm_la_SOURCES =
 
-libDtTerm_la_LIBADD += Term/libTerm.la TermPrim/libTermPrim.la \
+libDtTerm_la_LIBADD = Term/libTerm.la TermPrim/libTermPrim.la \
 		       TermView/libTermView.la
 
 if OPENBSD
 libDtTerm_la_LIBADD += -lutil
 endif
 
-if SUN
+if SOLARIS
 libDtTerm_la_LIBADD += -ldl -lgen
 endif