libarchive: Use CommonCrypto APIs on OS X only when available

Use each CommonCrypto API only when using an OS X SDK version new enough
to provide it.

Utilities/cmlibarchive/libarchive/archive_cryptor.c

@@ -31,7 +31,7 @@
 #include "archive.h"
 #include "archive_cryptor_private.h"
 
-#ifdef __APPLE__
+#ifdef ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
 
 static int
 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
@@ -114,7 +114,10 @@ pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
 
 #endif
 
-#ifdef __APPLE__
+#ifdef ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
+# if MAC_OS_X_VERSION_MAX_ALLOWED < 1090
+#  define kCCAlgorithmAES kCCAlgorithmAES128
+# endif
 
 static int
 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)

Utilities/cmlibarchive/libarchive/archive_cryptor_private.h

@@ -31,6 +31,13 @@
 #define ARCHIVE_CRYPTOR_PRIVATE_H_INCLUDED
 
 #ifdef __APPLE__
+# include <AvailabilityMacros.h>
+# if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
+#  define ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
+# endif
+#endif
+
+#ifdef ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
 #include <CommonCrypto/CommonCryptor.h>
 #include <CommonCrypto/CommonKeyDerivation.h>
 #define AES_BLOCK_SIZE	16

Utilities/cmlibarchive/libarchive/archive_hmac.c

@@ -31,7 +31,7 @@
 #include "archive.h"
 #include "archive_hmac_private.h"
 
-#ifdef __APPLE__
+#ifdef ARCHIVE_HMAC_USE_Apple_CommonCrypto
 
 static int
 __hmac_sha1_init(archive_hmac_sha1_ctx *ctx, const uint8_t *key, size_t key_len)

Utilities/cmlibarchive/libarchive/archive_hmac_private.h

@@ -31,6 +31,13 @@
 #define ARCHIVE_HMAC_PRIVATE_H_INCLUDED
 
 #ifdef __APPLE__
+# include <AvailabilityMacros.h>
+# if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
+#  define ARCHIVE_HMAC_USE_Apple_CommonCrypto
+# endif
+#endif
+
+#ifdef ARCHIVE_HMAC_USE_Apple_CommonCrypto
 #include <CommonCrypto/CommonHMAC.h>
 
 typedef	CCHmacContext archive_hmac_sha1_ctx;