examples: add minimal_c_like_program_using_puts.v showing how to produce a much smaller executable on Linux, using clang, mold and sstrip.

examples/minimal_c_like_program_using_puts.v

@@ -0,0 +1,14 @@
+module no_main
+
+// Compile with:
+// v -cc clang -prod -gc none -cflags '-s -fuse-ld=mold' -o hw examples/minimal_c_like_program_using_puts.v && ll hw && sstrip -z hw && ll hw
+// With clang-10, on Ubuntu 20.04, it produces an executable with a size of 2331 bytes, after stripping.
+// Note: the above uses sstrip 2.1 (from https://git.sr.ht/~breadbox/ELFkickers) and mold 2.32.0 (from https://github.com/rui314/mold).
+
+fn C.puts(const_msg &char) int
+
+@[export: 'main']
+fn hello() int {
+	C.puts(c'Hello world')
+	return 0
+}