svn rev #20150: trunk/src/include/

[raeburn@MIT.EDU]

Commit By: raeburn
Log Message: 
On Mac, include TargetConditionals.h and architecture/byte_order.h,
and use OSSwapInt{16,32,64} for SWAP* macros.

Add k5_htonll and k5_ntohll functions.  (Implementation assumes the
swapping is its own reverse on all platforms we support.)



Changed Files:
U   trunk/src/include/k5-platform.h