allfs: remove the call to drop caches (used in a test for non-root)
allfs: add a couple of tests (5r, 5m): parallel open/read of a single/many files
pseudofs.inc coming along
man tests working for pseudofs testing
    testwr
    testrd
    testrm
    testlookup
    testcheck_inode
    testremove_lookup
    testremove_readdir
ACL: fixes bug in test 31d