[compiler-rt] Disable a test failing on windows.

Summary:
The unittest is not working on windows. The "regexp.h" is not available and
gtest-port won't support regexp with operator '|'.

The test wasn't failing on 32-bits because of this check:
```
  if (SANITIZER_WORDSIZE != 64 || ASAN_AVOID_EXPENSIVE_TESTS) return;
```

```
[ RUN      ] AddressSanitizer.HugeMallocTest
C:/src/llvm/llvm/utils/unittest/googletest\src/gtest-port.cc(272): error: Failed
Syntax error at index 30 in simple regular expression "is located 1 bytes to the left|AddressSanitizer failed to allocate": '|' is unsupported.
C:/src/llvm/llvm/projects/compiler-rt/lib/asan/tests/asan_test.cc(308): error: Death test: Ident((char*)malloc(n_megs << 20))[-1] = 0
    Result: died but not with expected error.
  Expected: is located 1 bytes to the left|AddressSanitizer failed to allocate
```

See gtest-port.h:
```
  #elif GTEST_OS_WINDOWS

// <regex.h> is not available on Windows.  Use our own simple regex
// implementation instead.
# define GTEST_USES_SIMPLE_RE 1
```

Reviewers: rnk

Subscribers: llvm-commits, wang0109, kubabrecka, chrisha

Differential Revision: http://reviews.llvm.org/D22257

llvm-svn: 275181