Start updating vcl(7) for 4.0
Various fixes

Spelling. While here also fix indentation and make sure we are using
the right name for the variables and not the backward compat ones.
Improve manpage formatting

Add a second parameter to $Module to specify the manpage section
and change how the description is printed.
Pass the section
Hook the vmod_directors manpage
Use the generated rst when creating the manpage
Fix test-case to match updated error from compiler.

Varnishtest not run by:		fgs
Ensure rst files are built before generating the manpages
Fix uintmax_t printf format arguments.

Fixes	#1432
Revert 5c3ce452, e85e0aae and 6131dc97 for now

They break the build if parallelised and make jenkins upset
Move vcl_hash close to vcl_recv
When changing the busyobj we should use broadcast so everybody hears.

Spotted by:	gquintard