Fix Issue 1574 - Add a simple example of macro substitution.
Strip spaces.
Fix Issue 12653 - Add documentation for the getFunctionAttributes trait.
Add link to the DWiki building Curl on Windows guide.
Document C++ namespace support
Merge pull request #567 from AndrejMitrovic/BuildCurl

Add link to the DWiki building Curl on Windows guide.
Merge pull request #566 from AndrejMitrovic/Fix12653

Issue 12653 - Document the getFunctionAttributes trait.
Merge pull request #565 from AndrejMitrovic/Fix1574

Issue 1574 - Add a simple example of macro substitution.
Merge pull request #572 from WalterBright/namespace

Document C++ namespace support