configure/Makefiles: add checks for Xmu, Xext, and Xdmcp

We also remove sun pro specific options, and do some general cleanup
as well as remove hardcoded library refs like -lXm, -lXext, etc...

cde/lib/DtSearch/raima/Makefile.am

@@ -2,10 +2,8 @@ MAINTAINERCLEANFILES = Makefile.in
 
 noinst_LTLIBRARIES = libraima.la
 
-libraima_la_LIBADD = -lc -lm
-
 libraima_la_CFLAGS = -DCDE_INSTALLATION_TOP=\"$(CDE_INSTALLATION_TOP)\" \
-		     @DT_INCDIR@ -I$(top_srcdir)/include \
+		     $(DT_INCDIR) -I$(top_srcdir)/include \
 		     -DCDE_CONFIGURATION_TOP=\"$(CDE_CONFIGURATION_TOP)\" \
 		     -DNO_TRANS -DUNIX -D_POSIX_SOURCE -DMULTIBYTE
 
@@ -21,10 +19,6 @@ if SOLARIS
 libraima_la_CFLAGS += -D_XOPEN_SOURCE=500 -DNO_REGCOMP
 endif
 
-if HPUX
-libraima_la_CFLAGS += -DMESSAGE_CAT
-endif
-
 
 libraima_la_SOURCES = alloc.c     cmtype.c   connect.c \
 		      cotype.c    crget.c    crread.c    crset.c \