Improve build system

- Reduce full build latency from ~20s to ~18s
- Bring back silent mode if `make V=0` is passed
- Demodernize utimes() polyfill so it works RHEL5
- Delete some old shell scripts that are no longer needed
- Truncate long lines when outputting builds to Emacs buffers

libc/nt/nt.mk

@@ -151,8 +151,6 @@ $(LIBC_NT_NTDLL_A):					\
 		libc/nt/ntdll/				\
 		$(LIBC_NT_NTDLL_A).pkg			\
 		$(LIBC_NT_NTDLL_A_OBJS)
-	@$(file >$@.cmd) $(file >>$@.cmd,$(ARCHIVE) $@ $^ >$(LIBC_NT_NTDLL_A).cmd)
-	@$(ARCHIVE) $@ $^
 
 $(LIBC_NT_NTDLL_A).pkg:					\
 		$(LIBC_NT_NTDLL_A_OBJS)			\