Fix anchor links.
Linkage for keywords in lex.html
lex.dd: Fixed a deprecation link; made a decision on string.
lex.dd: macro typo.
Kill the syntax `alias this = sym;`
leading / borks up local versions
Merge pull request #224 from 9rnsr/x3011

Kill the syntax `alias this = sym;`
Merge pull request #268 from WalterBright/b1

leading / borks up local versions
Merge pull request #266 from Wyatts/linkage

Doc links for keywords
Merge pull request #265 from Wyatts/1bd1a99dd3d45c4db88d68a4bf20225f93ac083d

Fix anchor links
Merge pull request #250 from andralex/ddoc-newfiles

Support for consistent CSS-based HTML generation
Merge branch 'dlang.ddoc', remote-tracking branch 'upstream/master' into dlang.ddoc