Move selinux dependencies out of header files.

Bug: http://b/27764900
Change-Id: Ib62a59edcb13054f40f514c404d32b87b14ed5f1
diff --git a/minzip/DirUtil.cpp b/minzip/DirUtil.cpp
index 823b6ed..e08e360 100644
--- a/minzip/DirUtil.cpp
+++ b/minzip/DirUtil.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "DirUtil.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ -26,7 +28,8 @@
 
 #include <string>
 
-#include "DirUtil.h"
+#include <selinux/label.h>
+#include <selinux/selinux.h>
 
 typedef enum { DMISSING, DDIR, DILLEGAL } DirStatus;
 
diff --git a/minzip/DirUtil.h b/minzip/DirUtil.h
index 85a0012..85b83c3 100644
--- a/minzip/DirUtil.h
+++ b/minzip/DirUtil.h
@@ -24,8 +24,7 @@
 extern "C" {
 #endif
 
-#include <selinux/selinux.h>
-#include <selinux/label.h>
+struct selabel_handle;
 
 /* Like "mkdir -p", try to guarantee that all directories
  * specified in path are present, creating as many directories
diff --git a/minzip/Zip.c b/minzip/Zip.c
index 0f89835..9f550f8 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -23,6 +23,9 @@
 #undef NDEBUG   // do this after including Log.h
 #include <assert.h>
 
+#include <selinux/label.h>
+#include <selinux/selinux.h>
+
 #define SORT_ENTRIES 1
 
 /*
diff --git a/minzip/Zip.h b/minzip/Zip.h
index e6b19e1..c932c11 100644
--- a/minzip/Zip.h
+++ b/minzip/Zip.h
@@ -18,8 +18,7 @@
 extern "C" {
 #endif
 
-#include <selinux/selinux.h>
-#include <selinux/label.h>
+struct selabel_handle;
 
 /*
  * One entry in the Zip archive.  Treat this as opaque -- use accessors below.