add DTWI and fix interrupts
Merge pull request #522 from KeithV/master

Fix interrups, add DTWI, fix Wire, fix timer for MZ
Merge pull request #521 from ricklon/master

Updates to support Arduino 1+ networking, pgmspace.h compatibility
fix the deIP network stack and HTTP server examples
Merge pull request #524 from KeithV/master

fix the deIP network stack and HTTP server examples
Issue #523 moved Arduino libraries folder ./hardware/arduino/libraries
Issue #523 added the folder to the repo
Merge pull request #8 from chipKIT32/master

Grab Keith's changes