Way to specify number of digits / places when printing hex, octal, and binary numbers. [imported]

This is [Issue 549](http://code.google.com/p/arduino/issues/detail?id=549) moved from a Google Code project.
Added by 2011-05-24T19:34:41.000Z by [dmel...@gmail.com](http://code.google.com/u/107726014984682000895/).
Please review that bug for more context and additional comments, but update this bug.

Original labels: Type-Enhancement, Priority-Medium, Component-Core
### Original description

Serial.print(n, HEX, 3); // for example