Fix Debounce example to work as described

This alters the debounce example code to toggle the LED rather than just use
the button state to set the LED state.

Fixes #293
edited some ethernet ad wifi examples
added driver install utility (dpinst 32- and 64-bit) and Arduino icon needed for Windows installer
Merge pull request #1192 from miek/debounce-fix

Fix Debounce example to work as described
small changes to the Debounce example
Moved refresh client from html meta tag to http header
Fixes #953
WifiWebServer example: Moved the autorefresh feature inside the http header
WebServer example: Added comments
Support select-paste on Linux (Paul Stoffregen)
Add "Copy To Clipboard" button for compile errors (Paul Stoffregen)
Corrected the return type of the digitalPotWrite in the SPI/DigitalPotControl example
Fixes #1063
changed the pin where to connect the button from 2 to 4 to be compliant with the comment in the header and the tutorial.
Fixes #1396
Merge branch 'master' of github.com:arduino/Arduino into LUFA_bootloader
updated driver description string to "Arduino USB Driver".  includes new .cat
Merge branch 'master' of https://github.com/arduino/Arduino