Hfst

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* HFST updated to work with the newest versions of backend libraries

* a new replace down function by Karttunen added

* HfstTransitionGraph and conversions between formats made less error-prone

* protected/public changes in API

* SFST and foma libraries are disabled from default build

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* Numerous improvements to hfst-proc, including better uppercasing via glib,
better compound handling, new analysis mode for raw analysis without case
changes or special symbols etc.

* old slow lexc (not built by default)

* numerous scripting fixes for mac os x compatibility with foma

* constness changes in API

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* Numerous bugfixes, in particular regarding a broken assumption in
compose-intersect

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* api for lookup and lookdown changed, previously memory didn't get initialized
anywhere, causing a serious bug

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* numerous internal improvements, eg. distcheck is now functional

* many bugfixes, especially wrt. INDENTITY_PAIR & OTHER SYMBOL, composition,
final weights in ol-converted transducers

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* some fixes to OSX compatibility

* no more license conflict problems wrt foma

* better memory use in compose-intersect

* new implementation of internal transducer