Add alarm filtering (suppressions) feature

[Bojun-Seo]

Sometimes user wants to remove some reports which are not necessary to be trace.
So I suggest to add alarm filtering feature.
Like suppressions feature on llvm-project Sanitizers
https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer#suppressions

[honggyukim]

We can support it but it might take a while if I have to do. Would you like to try that?

[Bojun-Seo]

OK great, I will make a patch soon.

[Bojun-Seo]

I'm currently implementing this feature.
Followings are the draft patch.
Bojun-Seo@cdd04b6
And I have two issues on this patch.

1. I copied TemplateMatch function from llvm-project, so I need to check license issue.
2. Duplicated symbol resolving issue
   is_suppressed flag sets on record_backtrace function(this patch, resembles llvm-project).
   Symbol resolving is needed to do this on here. But symbol will be resolved on printing phase later.
   So duplicated symbol resolving will be happened with this patch.
   It could be possible to eliminate this duplication by caching symbols,
   Or just check suppressions on printing phase with already resolved symbols.

[Bojun-Seo]

I implement this feature.
#28