Support forcing a build

There are times when the git revision check prevents us from being able
to test this build framework. This commit teaches `bin/ci.sh` the `-f`
flag to force a build.
Signed-off-by: Shawn Webb <shawn.webb@hardenedbsd.org>
github-issue:	#5

bin/ci.sh

@@ -43,17 +43,23 @@ TOPDIR=$(get_topdir ${0})
 
 main() {
 	local self
+	local forcebuild
 
 	self=${0}
 	shift
 
+	forcebuild=0
+
 	config_set_defaults
 
-	while getopts 'c:' o; do
+	while getopts 'c:f' o; do
 		case "${o}" in
 			c)
 				. ${OPTARG}
 				;;
+			f)
+				forcebuild=1
+				;;
 		esac
 	done
 
@@ -64,7 +70,7 @@ main() {
 
 		update_codebase || exit ${?}
 
-		if ! should_build; then
+		if ! should_build ${forcebuild}; then
 			unlock_build
 			exit 0
 		fi

lib/util.sh

@@ -93,6 +93,10 @@ update_codebase() {
 should_build() {
 	local lastbuild
 	local currenthashish
+	local forcebuild
+
+	forcebuild=${1}
+	[ ${forcebuild} -gt 0 ] && return 0
 
 	if [ ! -f ${HBSD_CACHEDIR}/last_build.txt ]; then
 		return 0