Implement translation of pointer, reference and simple array types. We now

compile:

void foo() {
  int A[10];
  int *P;

into:

entry:
        %A = alloca [10 x i32]          ; <[10 x i32]*> [#uses=0]
        %P = alloca i32*                ; <i32**> [#uses=0]

llvm-svn: 39561