Fix Windows build issues for LLVM.

Remove HAVE_SYS_UIO_H redefinition due to Windows build conflicts.
Add dependency on imagehlp.lib/dll.

Change-Id: I41cb9331c1fbde849ff9dc6906cbe9d8ae6bbc50
Merge tag 'android-4.3.1_r1' into HEAD

Android 4.3.1 Release 1