Replaced GDI painting with DirectWrite

[pyscripter]

Use DirectWrite for text painting:

• GDI text painting was replaced with DirectWrite painting
• SynEditPrint was implemented with DirectWrite
• SynEditWordWrap implemented almost from scratch using DirectWrite
• Cursor positioning (Pixel... methods) reimplemented using Direct Write
• SynEditTextDrawer.pas was replaced with SynDWrite.pas and SynUsp10.pas was removed

Fixes #26 Fixes #145 Fixes #148 Fixes #139 Fixes #150 Fixes #151

See discussions #126 and #141