bash: man: Drop .sh extension from scripts in $PATH
The convention is that executables in $PATH should not have an
extension. This allows for re-writes in a different language being
transparent to the user.
all: Remove most in-file ChangeLogs and versioning
In-file ChangeLog information is no longer required in the modern VCS
world, except where a file is imported as a version, eg bootstrap.sh,
gitignore etc.
In-file versioning should only be provided when it helps to narrow down
bugs or problems. So they are valid as script / program version
information which the user can quote when reporting bugs. They are not
required on AutoTools files for example.
