Beautiful variable names

[Sergey Matveychuk]

Take a look at PR/49955. I think it's very convinient to have 
documentation automatic install and may be examples too. I've reworked a 
Sergei Kolobov's patch. But there is one doubt. What is the best 
variable name must we use? Sergei offer INSTALL_DOCS. I offer 
DOCS_FILES. So, for examples we can use EXAMPLES_FILES.

Well, IMHO the best names are just DOCS and EXAMPLES (to be like INFO), 
but DOCS is used by more then 330 ports and EXAMPLES is used by 70 
ports. So we can't use them without ports modifications.

What is the best way: to take more beautiful names and to modify 400 
ports or to take the backward compatible names?

PS. I think this question mostly to portmgr. They are make decisions.

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