- tweaked verbosity on output to not spew so much on VERB_2

files.cpp:
- Fixed bug in pack_file list where data was being incorrectly packed
- Fixed bug in build_full_filelist where file list was being created with incorrect root, causing incorrect recursive creation
- Added routines to properly free file lists and file objects
- Added preliminary routine to compare timestamps (needs work to correctly identify which is greater, tho)

parcel.cpp:
- Added a few frees to some of the malloc'ed memory (more to do there as well)
- Added ability to check a filelist on receive and send back after checking for existence/timestamps

receiver.cpp:
- Completed check of file list on callback, walking list and changing timestamps accordingly

sender.cpp:
- Completed handling of file list when sending files, passing in a list for handle_files so that it can see if files are necessary(this could cause issue with checkpoint file, need to test functionality)