[PATCH] [Sanitizer RT] Put the module name string ownership in Symbolizer in order

[Kostya Serebryany]

In http://reviews.llvm.org/D8666#147989, @timurrrr wrote:

> How does the caller pick the buffer size?


isn't this kMaxPathLength ?

>   Also, this way we'll be copying

> 

> a lot of strings without the need to do so...


How bad is that? 
Are we getting the module name in any perf critical place?


http://reviews.llvm.org/D8666

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