Hfst

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* Include directives of foma and SFST header files changed so
that standard include path is used instead of source path

* Compilation warnings and some memory leaks fixed

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* hfst-fst2txt.cc also writes to dot/graphviz format

* Epenthesis added for Xerox rules parser

* hfst-compose-intersect gives warnings on missing symbols

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* Substitution functions optimized and new substitution functions added that
perform multiple substitutions at the same time.

* The tool hfst-substitute now implements the option --in-order.

* Updated to OpenFst version 1.2.10.

* Conversions between transducer formats are more efficient.

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* HfstTransitionGraph and optimized lookup transducer code optimized

* Foma transducer name is not copied to the net but is left empty

* Small fixes to twolc

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* Forward compatibility with OpenFst 1.2.8 is achieved.

* PKG_ macros removed from end user builds since they do not work nicely on
all platforms.

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* Handling of flag diacritics improved.

* More examples in fsmbook-examples included in tests.

* Extra files created during tests as well as generated autotools files
are now ignored by svn.