- When building world WITHOUT_LIBPTHREAD, link libthr to libpthread.

- Don't build ngctl(8) and cached(8) if threading libs aren't built.
- Fix various issues in a cached(8) makefile.

Makefile

@@ -6,12 +6,8 @@ SUBDIR=	${_ggatec} \
 	${_ggated} \
 	ggatel
 
-.if ${MACHINE_ARCH} == "sparc64"
-.if ${MK_LIBTHR} != "no"
-_ggatec=	ggatec
-_ggated=	ggated
-.endif
-.elif ${MK_LIBPTHREAD} != "no"
+.if ${MK_LIBTHR} != "no" || \
+    (${MACHINE_ARCH} != "sparc64" && ${MK_LIBPTHREAD} != "no")   
 _ggatec=	ggatec
 _ggated=	ggated
 .endif