Update get_source.sh

* improve feedback for invalid arguments
* improve feedback for cloning steps
* remove support for non-standard options
* remove unused variables

Signed-off-by: Keith W. Campbell <keithc@ca.ibm.com>

get_source.sh

@@ -22,9 +22,6 @@
 # exit immediately if any unexpected error occurs
 set -e
 
-openssloptions=""
-DOWNLOAD_OPENSSL=false
-
 # These maps are keyed by the prefix of option names (e.g. openj9, omr).
 declare -A source_branch    # branch or tag
 declare -A source_folder    # local working directory
@@ -140,35 +137,10 @@ process_options() {
 	local version=""
 
 	for arg in "$@" ; do
-		# temporarily handle openssl options that don't follow the general pattern
-		case "$arg" in
-			--openssl-repo=*)
-				# remove leading '-'
-				arg="${arg/--/-}"
-				;;
-			--openssl-version=*)
-				# map to -openssl-branch
-				version="${arg#*=}"
-				case "$version" in
-					1.0.2* | 1.1.*)
-						version="OpenSSL_${version//./_}"
-						;;
-					3.*)
-						version="openssl-$version"
-						;;
-					*)
-						;;
-				esac
-				arg=-openssl-branch=$version
-				;;
-			*)
-				;;
-		esac
-
 		if [[ "$arg" =~ -([A-Za-z0-9]+)-(branch|reference|repo|sha)=.* ]] ; then
 			local key="${BASH_REMATCH[1]}"
 			if [ -z "${source_folder[${key}]}" ] ; then
-				fail "Unknown option: $arg"
+				fail "Unknown option: '$arg'"
 			fi
 
 			local value="${arg#*=}"
@@ -197,7 +169,7 @@ process_options() {
 					break
 					;;
 				*)
-					# bad option
+					fail "Unknown option: '$arg'"
 					usage
 					;;
 			esac
@@ -234,7 +206,7 @@ clone_or_update_repos() {
 				cd - > /dev/null
 			else
 				echo
-				echo "Clone repository: $folder"
+				echo "Cloning $folder version $branch from $url"
 				echo
 
 				git clone \