Re-organize header files so that file systems can be built outside of the...

Re-organize header files so that file systems can be built outside of the nuttx tree; add a binfs file system to apps/namedapp

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3428 42af7a65-404d-4744-a932-0658087f49c3