Improve the section for Lambda and Function Literal

Because, in D, "Lambda" is a kind of function literal.
fix Issue 10848 - Compiler should always try to inlining a direct lambda call
update the compiler dowload link

1.http://dlang.org/download.html
we see that the version is 2.064.2

2.http://dlang.org/dmd-linux.html
when we click the 'Download D Compiler', go to this page
http://www.digitalmars.com/d/download.html
the version is 2.063.2
SUB macro collides with SUB=&sub;

- add SUBSCRIPT, SUPERSCRIPT like in latex.ddoc
- use SUBSCRIPT for ARGUMENTS in operatoroverloading.dd
- use ARGUMENTS instead of b1,b2..bn
Merge pull request #455 from MartinNowak/fixSUB

SUB macro collides with SUB=&sub;
Update template.dd

Inserted C++ before "template mechanics".

That is an funny twisted quote from Richard Feynman. But seriously, I would include C++ here, since D's templates are much easier to understand.
Merge pull request #456 from ralphtandetzky/patch-20

Update template.dd
Document improvements to LabelStatements
Fix link to lex.html
Fix anchors for each statements
Fix anchors more
Fix `ForeachType`

Optional `TypeCtors` now allowed
Merge pull request #458 from 9rnsr/grammar

Tweak Grammar page
Do https://github.com/D-Programming-Language/dlang.org/pull/271 in small steps
Merge pull request #459 from andralex/style.css

Do https://github.com/D-Programming-Language/dlang.org/pull/271 in small...
fix Issue 10206 - User-defined attributes not documented well in language specification

Move grammar `Property` to attribute.dd
Merge pull request #457 from yebblies/labelstatement

Document improvements to LabelStatements
Merge pull request #460 from 9rnsr/grammar

Issue 10206 - User-defined attributes not documented well in language specification
use GIT_HOME to fetch tags
separate and reuse targets to clone dmd/druntime/phobos