[PATCH] Improve code readability in org-set-font-lock-defaults

[Nick Savage]

I'm not sure what the appetite is for small changes like this, but I 
have attached a small patch to improve readability in 
org-set-font-lock-defaults. I was trying to understand how org-emphasize 
worked and came across some code that I thought could be simplified.

If small refactoring patches like this aren't recommended or if I should 
wait until I have larger patches put together first before sending them 
to the list, please let me know.

0001-Refactor-org-set-font-lock-defaults-to-improve-code-.patch
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