Cleanup title page

Only print the specification state on the title page, not the entire
text. In order to remove the text, add support to override revremark
with a Makefile variable, and also support VERSION and DATE overrides.
For example, v1.0.1 may now be built with

  make VERSION=v1.0.1 REVMARK=Ratified

Signed-off-by: Andrew Jones <[email protected]>

Makefile

@@ -19,6 +19,10 @@ ifeq ($(strip $(GITVERSION)),)
   GITVERSION := no_tag
 endif
 
+VERSION ?= ${GITVERSION}
+DATE ?= ${COMMITDATE}
+REVMARK ?= Draft
+
 DOCKER_RUN := docker run --rm -v ${PWD}:/build -w /build \
 riscvintl/riscv-docs-base-container-image:latest
 
@@ -29,8 +33,9 @@ ASCIIDOCTOR_PDF := asciidoctor-pdf
 OPTIONS := --trace \
            -a compress \
            -a mathematical-format=svg \
-           -a revnumber=${GITVERSION} \
-           -a revdate=${COMMITDATE} \
+           -a revnumber=${VERSION} \
+           -a revdate=${DATE} \
+           -a revremark=${REVMARK} \
            -a pdf-fontsdir=docs-resources/fonts \
            -a pdf-style=docs-resources/themes/riscv-pdf.yml \
            --failure-level=ERROR

riscv-ffh.adoc

@@ -44,7 +44,7 @@ endif::[]
 [WARNING]
 .This document is in the link:http://riscv.org/spec-state[Ratified state]
 ===
-No changes are allowed. Any desired or needed changes can be the subject of a follow-on new extension. Ratified extensions are never revised
+No changes are allowed. Any desired or needed changes can be the subject of a follow-on new extension. Ratified extensions are never revised.
 [preface]
 == Copyright and license information
 This specification is licensed under the Creative Commons
@@ -64,6 +64,10 @@ include::contributors.adoc[]
 
 * Initial version
 
+==== Version 1.0.1
+
+* Only print the specification state on the title page, not the entire text.
+
 == Introduction
 
 RISC-V systems which use Advanced Configuration and Power Interface (ACPI)