clang-format more files.

"Gofmt's style is nobody's favourite, but gofmt is everybody's favourite."
    - Rob Pike

src/stub/scripts/upx-clang-format

@@ -2,6 +2,8 @@
 ## vim:set ts=4 sw=4 et:
 set -e; set -o pipefail
 
+# "Gofmt's style is nobody's favourite, but gofmt is everybody's favourite." Rob Pike
+
 # NOTE: we are using clang-format-10.0.1 from upx-stubtools
 # see https://github.com/upx/upx-stubtools/releases