pacman-helper: prepare for UCRT64 packages

We plan on building Git for Windows against the more modern UCRT instead
of the old MSVCRT at some point in the future (Most likely Git 3.0). To
be able to do that we'll need to be able to create and publish UCRT64
packages. And to aid a smooth transition, we'll need to be able to
publish MINGW64 and UCRT64 packages in parallel for a little while.
Prepare our pacman-helper script to deal with this.

Signed-off-by: Matthias Aßhauer <mha1993@live.de>

Author: rimrul

pacman-helper.sh

@@ -249,6 +249,7 @@ quick_action () { # <action> <file>...
 		mingw-w64-*.pkg.tar.xz|mingw-w64-*.pkg.tar.zst)
 			arch=${file##mingw-w64-}
 			arch=${arch#clang-}
+			arch=${arch#ucrt-}
 			arch=${arch%%-*}
 			key=${arch}_mingw
 			;;
@@ -283,10 +284,11 @@ quick_action () { # <action> <file>...
 			file=${file%-[0-9]*-[0-9]*}
 			key=${arch}_msys
 			;;
-		mingw-w64-i686-*|mingw-w64-x86_64-*|mingw-w64-clang-aarch64-*)
+		mingw-w64-i686-*|mingw-w64-x86_64-*|mingw-w64-ucrt-x86_64-*|mingw-w64-clang-aarch64-*)
 			test remove = "$label" || die "Cannot add $path"
 			arch=${file#mingw-w64-}
 			arch=${arch#clang-}
+			arch=${arch#ucrt-}
 			arch=${arch%%-*}
 			file=${file%-any}
 			file=${file%-[0-9]*-[0-9]*}
@@ -367,9 +369,12 @@ quick_action () { # <action> <file>...
 		*,) db2=;;
 		i686,*) db2=mingw32;;
 		*aarch64*) db2=clangarm64;;
-		*) db2=mingw64;;
+		*)
+			db2=mingw64
+			db3=ucrt64
+			;;
 		esac
-		for db in git-for-windows-$arch ${db2:+git-for-windows-$db2}
+		for db in git-for-windows-$arch ${db2:+git-for-windows-$db2} ${db3:+git-for-windows-$db3}
 		do
 			# The Pacman repository on Azure Blobs still uses the old naming scheme
 			case "$db" in
@@ -419,17 +424,20 @@ quick_action () { # <action> <file>...
 				cp git-for-windows-$arch.db.tar.xz.sig git-for-windows-$arch.db.sig
 			}
 		 } &&
-		 if test -n "$db2"
-		 then
-			$action $sign_option git-for-windows-$db2.db.tar.xz $mingw &&
-			{ test ! -h git-for-windows-$db2.db || rm git-for-windows-$db2.db; } &&
-			cp git-for-windows-$db2.db.tar.xz git-for-windows-$db2.db && {
-				test -z "$sign_option" || {
-					{ test ! -h git-for-windows-$db2.db.sig || rm git-for-windows-$db2.db.sig; } &&
-					cp git-for-windows-$db2.db.tar.xz.sig git-for-windows-$db2.db.sig
+		 for db in $db2 $db3
+		 do
+		 	if test -n "$db"
+		 	then
+				$action $sign_option git-for-windows-$db.db.tar.xz $mingw &&
+				{ test ! -h git-for-windows-$db.db || rm git-for-windows-$db.db; } &&
+				cp git-for-windows-$db.db.tar.xz git-for-windows-$db.db && {
+					test -z "$sign_option" || {
+						{ test ! -h git-for-windows-$db.db.sig || rm git-for-windows-$db.db.sig; } &&
+						cp git-for-windows-$db.db.tar.xz.sig git-for-windows-$db.db.sig
+					}
 				}
-			}
-		 fi &&
+			fi
+		 done &&
 
 		 # Remove the existing versions from the Git branch
 		 printf '%s\n' $msys $mingw |