Accept concatenated bzip2 files
added operator< to SearchGraphNode - compares Ids
mosesserver gives search graph ordered by hyp-id
ported perl xmlrpc example to python
fixed bug in InterpolatedScorer
--max-factors=1 and Sparse features segfault -> different check suggested by Philipp
Work on decreasing memory requirement for outputting hypergraph
Allow hypergraph output to be in plain text, gzip, or bzip2.

The output-search-graph-hypergraph flag now takes two params:

* The first param must be "none", "gzip", or "bzip2"
* The second param is the hypergraph directory,
  which must already exist
Work on compression and defaults for outputting hypergraphs.
Ensure directory exists for outputting hypergraphs
compile error caused by different versions of boost
merge
Merge branch 'weight-new' of github.com:hieuhoang/mosesdecoder into weight-new