prototype GHKM tree output from extract-ghkm (still flawed)
GHKM tree output during extraction: modified extract-ghkm and score tools
Add -Tghkm parameter

Writes internal tree structure (if available) for 1-best derivation.
Code contributed by Nina Seemann.
tiny changes to GHKMParse info in search
mock feature
Merge branch 'GHKMStruct' of github.com:moses-smt/mosesdecoder into GHKMStruct
add feature files
added Dense and Sparse feature to scorer
sparse feature weight file
comment for Equal implementation
Tree fragments in GHKM glue rules;
output of LHS tag in tree fragments for UNKs;
GHKMParse info is now denoted as Tree info
Merge branch 'GHKMStruct' of github.com:moses-smt/mosesdecoder into GHKMStruct
comment for Equal implementation
Merge branch 'master' into GHKMStruct
avoid code replication: OutputTranslationOption
Merge branch 'GHKMStruct' of github.com:moses-smt/mosesdecoder into GHKMStruct
Stateless Feature InternalStructStatelessFF
Stateless Feature InternalStructStatelessFF
Merge branch 'GHKMStruct' of github.com:moses-smt/mosesdecoder into GHKMStruct
stuff that probably doesn't work