ice: Added Java and Python libraries to Ice 3.4.2 Formula

This pull request adds the Java and Python options in to the Formula for Ice 3.4.2. Currently the Java jars are left in the cellar, as this was deemed appropriate on a previous attempt at this change (which got closed by the owner, see  mxcl/homebrew/pull/10976 and mxcl/homebrew/pull/13182).