Connect signatures.xml to the build.

Connect CHECKSUMS*.asc to the build.
Link to the signatures.html page from index.html.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation

en_US.ISO8859-1/htdocs/releases/11.0R/Makefile

@@ -7,8 +7,14 @@
 .include "../Makefile.inc"
 .endif
 
+_OS?=		FreeBSD
+_REVISION?=	11.0
+_BRANCH?=	RC1
+THISRELEASE?=	${_OS}-${_REVISION}-${_BRANCH}
+
 DOCS=	index.xml \
 	schedule.xml \
+	signatures.xml \
 	todo.xml
 
 DATA=	docbook.css \
@@ -16,4 +22,40 @@ DATA=	docbook.css \
 	readme.html \
 	relnotes.html
 
+# PGP-signed checksums
+
+_BIGIRON?=	amd64 \
+		i386 \
+		powerpc \
+		powerpc-powerpc64 \
+		sparc64 \
+		arm64-aarch64
+
+_VMS?=		amd64 \
+		i386 \
+		aarch64
+
+_ARM?=		BANANAPI \
+		BEAGLEBONE \
+		CUBIEBOARD \
+		CUBIEBOARD2 \
+		CUBOX-HUMMINGBOARD \
+		GUMSTIX \
+		PANDABOARD \
+		RPI-B \
+		RPI2 \
+		WANDBOARD
+
+.for CHECKSUM in SHA512 SHA256
+. for _B in ${_BIGIRON}
+DATA+=		CHECKSUM.${CHECKSUM}-${THISRELEASE}-${_B}.asc
+. endfor
+. for _V in ${_VMS}
+DATA+=		CHECKSUM.${CHECKSUM}-${THISRELEASE}-${_V}-vm.asc
+. endfor
+. for _A in ${_ARM}
+DATA+=		CHECKSUM.${CHECKSUM}-${THISRELEASE}-arm-armv6-${_A}.asc
+. endfor
+.endfor
+
 .include "${DOC_PREFIX}/share/mk/web.site.mk"

en_US.ISO8859-1/htdocs/releases/11.0R/index.xml

@@ -28,11 +28,9 @@
   <p>More detailed information, such as release notes and hardware
     notes can be found at these pages:</p>
 
-  <?ignore
   <a
     href="&base;/releases/&local.rel;R/signatures.html"
     >&os;&nbsp;&local.rel;-RELEASE signed checksum files</a><br/>
-  ?>
 
   <a
     href="&base;/releases/&local.rel;R/hardware.html"