Fix a variety of reproducibility issues

Include:
- Not regenerated man pages.
- Automake tarball with bad time (and completely useless).
- Ordering of files within tarballs.
- Resetting timestamp various fixes.
- Older tars not properly overwriting files leading to many issues.
- Weird lack of reproducibility in libtool scripts paths to tools.
- and more

sysc/automake-1.16.3/automake-1.16.3.sh

@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-checksum=708d854632c90e3706194a1a7555a3dc2fafb7ccae65872ad3420083f2781143
 
 src_prepare() {
     ./bootstrap