this needs tested by the heavy playlist users
with the addition of initialize_catalog_buf there shouldn't be any stack overflow concerns
since we are no longer creating another max_path sized buffer when one is already available
this also simplifies the code a bit
rather than carrying around the playlist directory just generate it on the fly
copies the directory to the supplied buffer
add catbroswe_status to keep track of what browse context(s) are currently in use
Change-Id: I145ec501f601c84bb52f2241ed28c6aefab6897b
177a15b2ed