hooks/strip-and-debug: do not override file perms.

... otherwise additional perms are lost, always resulting in non setuid bins.

common/hooks/post-install/03-strip-and-debug-pkgs.sh

@@ -81,7 +81,6 @@ hook() {
 		fi
 		case "$(file -bi "$f")" in
 		application/x-executable*)
-			chmod 755 "$f"
 			if echo "$(file $f)" | grep -q "statically linked"; then
 				# static binary
 				$STRIP "$f"
@@ -102,7 +101,6 @@ hook() {
 			fi
 			;;
 		application/x-sharedlib*)
-			chmod 755 "$f"
 			# shared library
 			make_debug "$f"
 			$STRIP --strip-unneeded "$f"
@@ -122,7 +120,6 @@ hook() {
 			attach_debug "$f"
 			;;
 		application/x-archive*)
-			chmod 644 "$f"
 			$STRIP --strip-debug "$f"
 			if [ $? -ne 0 ]; then
 				msg_red "$pkgver: failed to strip ${f#$PKGDESTDIR}\n"