[cfe-commits] [PATCH] Improved handling of 128-bit integer literals

[Stephen Canon]

Updated with Richard's latest input:

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• fixed indentation
• i32 and i64 will now have the correct size (instead of i32 being "long" even on LP64 platforms).  We can't do this for i8 or i16 without more invasive changes, so those will wait for another patch.
• MS literals get sign- or zero-extended as appropriate.
• MS literal path is generally cleaner.
• adopted hasInt128Type().

- Steve