TypePrinter should not ignore IndexTypeCVRQualifiers on constant-sized arrays

C99 array parameters can have index-type CVR qualifiers, and the TypePrinter
should print them when present (and we were not for constant-sized arrays).
Otherwise, we'd drop the restrict in:

  int foo(int a[restrict static 3]) { ... }

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213445 91177308-0d34-0410-b5e6-96231b3b80d8
Cleanup comparisons to VariableArrayType::Static for non-VLAs

The enum is part of ArrayType, so there is no functional change, but comparing
to ArrayType::Static for non-VLAs makes more sense.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213446 91177308-0d34-0410-b5e6-96231b3b80d8