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/DtSvc/DtEncap/Makefile.am

@@ -7,7 +7,7 @@ libDtEncap_la_CFLAGS = -DMULTIBYTE -I../include -I../DtUtil2 $(TIRPCINC) \
 		       -DCDE_INSTALLATION_TOP=\"${prefix}\" \
 		       -DCDE_LOGFILES_TOP=\"$(CDE_LOGFILES_TOP)/tmp\"
 
-if SUN
+if SOLARIS
 libDtEncap_la_CFLAGS += -DNO_REGCOMP
 endif