Naggy doesn't support C99 special syntax

[saaadhu]

As posted by pinguin_do (http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=839402#839402)

Examples what Atmel uses in framework and Naggy marks:

• bool in C programs (ok, allowed since C99) (bool in c++ is correctly not marked)
• uint8_t without including
• other C99 stuff