fixed var index container o2m init
handle fork/exec correctly
added rw mode to file_mapper
handle SIGCHLD via signalfd
remove extra line
added missing license
template for binary search and lower bound
bitswap
added heap
ribs2: trivial cleanup from cppcheck

avoid leak for fatal mysql failure
ribified more, simplified ribify
_ribified_sendfile() is now consistant

with writev: the calling library will deal with partial transfers
refactor hashtable (step 1)
hashtable: keep free list
hashtable using vmallocator
hashtable cleanup
vmfile: set fd to -1 on close
ribs_fork_and_wait()