…ds which holds the correct parameters was using a linear search through all of the possible bins. Not only that, but inside of that loop was an additional loop through all of the binned variables. This is a O(N^2) process. For one binned dimension this is fine and maybe even acceptable for two dimensions, but the slowdown was huge for three dimensions of binned variables. There is now a new way of searching for the right mRecords bin when there are three binned dimensions. This is a O(ln(n_d1)+ln(n_d2)+ln(n_d3)+2) process where n_di is the number of bins in each dimension. Dimensions d<3 must have overlapping bin boundaries (although they don't need the same exact number of bins). The last dimension (3) can have bin boundaries which aren't sharred among the (d1,d2) bins. In addition to this change there was a bug fix to how the code reads the upper and lower bounds of the binned dimensions.

…nd remove extraneous comments.

…function. Create a new helper class called JetCorrectorParametersHelper and put most of the new code in there. This version of the code will not compile due to a serialization error.

…d remove an extraneous std::endl.

…rrectorParameters class. Also untemplate the JetCorrectorParametersHelper class and set a maximum number of binned variables to 3.

… we added a REGISTER_PLUGIN_INIT command and the associated functions.

…he database are unsorted, or sorted incorrectly, and the new algorithm is used. If the JetCorrectorParameters are taken from the database the constructor is not called and this was the only place that sorted the Records. A new sort line was added to the init function in this case to make the class backwards compatible. In the worst case scenario a second sort is called on an already sorted collection, but this is a small overhead. We think that the old algorithm was robust to this improper sorting which was fixed early on in this update, but we aren't sure. Thus we left the sort in the constructor as well because the init function is not called when using the old algorithm.