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[Driver] Allow enum SanitizerOrdinal to represent more than 64 different…

Authored by pgousseau on Mar 1 2019, 2:05 AM.

Description

[Driver] Allow enum SanitizerOrdinal to represent more than 64 different sanitizer checks, NFC.

enum SanitizerOrdinal has reached maximum capacity, this change extends the capacity to 128 sanitizer checks.
This can eventually allow us to add gcc 8's options "-fsanitize=pointer-substract" and "-fsanitize=pointer-compare".

This is a recommit of r354873 but with a fix for unqualified lookup error in lldb cmake build bot.

Fixes: https://llvm.org/PR39425

Differential Revision: https://reviews.llvm.org/D57914

llvm-svn: 355190