Adding action=purge to the url did not bypass cache
in native mode, because the check request was performed
before the purge information was passed.
* Move purge property to the base class
* Pass purge option via the checker constructor
* Add cache checking for mathoid checker
* Adjust method signatures accordingly
Change-Id: I6f545060ae72dac8b12fb0f85662c4048059b2e9
* Cache results for checked tex and MathML string in one cache.
* Remove access to parsetree
* Introduce run method to speed up service wiring
Note that the indirection table used in previous versions was
abandoned here. texvc does only little unification's of the
input string so that it is not expected that the overall savings
in space and compute time warrant the additional table.
Change-Id: Ib9ce3d2ab02bd9a2a0f9926db6b937435b7e5458
