Adapt vagrant files for foam-3

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branch : bgschaid/foam3FixesBranch
Make basic decomposition-library independend from ThirdParty-software (but load the 'default' libraries before the runtime-selection kicks in)

--HG--
branch : bgschaid/foam3FixesBranch
Make sure that Mesquite-Library is only linked at Run-time

--HG--
branch : bgschaid/foam3FixesBranch