Kill introduced again deprecated `WEB` macro.

This is a fixup for pull request #349.
add dll-linux.html
Merge pull request #375 from WalterBright/add-dll-linux

add dll-linux.html
Fix issue 11001 - Add documentation for __traits(getVirtualIndex).
Merge pull request #378 from Kapps/fix11001

Fix issue 11001 - Add documentation for __traits(getVirtualIndex).
add link to core_demangle.html
Merge pull request #379 from dawgfoto/addCoreDemangle

add link to core_demangle.html
Fixes Issue 11035 - Document lack of .stringof reliability.
Merge pull request #380 from AndrejMitrovic/Fix11036

Issue 11035 - Document lack of .stringof reliability.
Merge pull request #363 from denis-sh/fixup-pull-349

Kill introduced again deprecated `WEB` macro.