Ignore various autogenerated files
4.0 updates
Fix std.duration documentation of qualifiers

std.duration conversion function has a mandatory qualifier. Change the
wording from 'can' to 'must' specify the qualifier.

Add a test case for a string without a qualifier.
Add 'ms' conversion qualifier to std.duration

Add 'ms' conversion qualifier to std.duration, and update
documentation and test case.

Fixes: #1434
Rename =build/ to build/

That silly equality sign constantly needed to be escaped and
is just unecessesary finger gymnastics. Die, please.
Make the TOC look sane PDF/latex version
Assorted minor documentation fixes
Sync with vmod.vcc
Minor cosmetic changes