Home brewed patch.
Use Solaris specific location of terminfo.

--- screen-4.3.1/Makefile.in.orig	Wed Jul 15 02:38:36 2015
+++ screen-4.3.1/Makefile.in	Wed Jul 15 02:38:56 2015
@@ -96,9 +96,10 @@
 ###############################################################################
 install: installdirs install_bin
 	cd doc ; $(MAKE) install
-	-if [ -d /usr/lib/terminfo ]; then \
+	-if [ -d $(DESTDIR)/usr/share/lib/terminfo ]; then \
+		TERMINFO=$(DESTDIR)/usr/share/lib/terminfo \
 		PATH="$$PATH:/usr/5bin" tic ${srcdir}/terminfo/screeninfo.src; \
-		chmod 644 /usr/lib/terminfo/s/screen*; \
+		chmod 644 $(DESTDIR)/usr/share/lib/terminfo/s/screen*; \
 	fi
 # Better do this by hand. E.g. under RCS...
 #	cat ${srcdir}/terminfo/screencap >> /etc/termcap