.clang-format: update to 3.8.1
.clang-format: update to 3.8.1

based on --style=Google with the following differences:
3a4
> # Generated with clang-format 3.8.1
13c14
< AllowShortCaseLabelsOnASingleLine: false
---
> AllowShortCaseLabelsOnASingleLine: true
41c42
< ConstructorInitializerAllOnOneLineOrOnePerLine: true
---
> ConstructorInitializerAllOnOneLineOrOnePerLine: false
44,45c45,46
< Cpp11BracedListStyle: true
< DerivePointerAlignment: true
---
> Cpp11BracedListStyle: false
> DerivePointerAlignment: false
73c74
< PointerAlignment: Left
---
> PointerAlignment: Right
75c76
< SortIncludes:    true
---
> SortIncludes:    false

SortIncludes will like be enabled in a future commit

Change-Id: I34cb20b99d2d988681e0cd0e74d03b3668ae0031

smarter/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,mbebenita/aom,GrokImageCompression/aom,luctrudeau/aom,mbebenita/aom,luctrudeau/aom,luctrudeau/aom,smarter/aom,GrokImageCompression/aom,smarter/aom,mbebenita/aom,smarter/aom,luctrudeau/aom,GrokImageCompression/aom,GrokImageCompression/aom,mbebenita/aom,luctrudeau/aom,smarter/aom,luctrudeau/aom,mbebenita/aom