Per-core and per-variant keywords.txt files (instead of a global one). [imported]

This is [Issue 755](http://code.google.com/p/arduino/issues/detail?id=755) moved from a Google Code project.
Added by 2011-12-21T22:13:49.000Z 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-IDE
### Original description

**What change would like to see?**

The keywords.txt file should come from the active core and variant, rather than being globally defined. (Both in addition to the per-library keywords.txt files). That way, the syntax highlighting will be correct, even for cores with differing APIs.

Locate the Arduino IDE 1.x code responsible for global and per-library keywords.txt loading and syntax highlighting; begin by tracing how the active core and variant are selected. Done means keywords are sourced from the active core and variant while per-library files continue to work and highlighting reflects differing APIs.

Written by the indexing model from the issue text.