Improves compatibility with cl.exe when laying out array fields

Differential Revision: http://llvm-reviews.chandlerc.com/D2090

Clang was "improperly" over-aligning arrays with sizes are not a multiple of 
their alignment. 
This behavior was removed in microsoft 32 bit mode.

In addition, after examination of ASTContext::getTypeInfoImpl, a redundant code block in 
MicrosoftRecordLayoutBuilder::getAdjustedFieldInfo was deleted.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193898 91177308-0d34-0410-b5e6-96231b3b80d8