Merge pull request #151 from gpetruc/slc6-root5.34.17

Sync SL6 branch to SL5
First go at NOT groups
Adding ability to group nuisances NOT in a specfic group
run --freezeNuisanceGroup ^name to freeze all nuisances
not in group "name"

Additionally fixed a bug causing a crash when using freezeNuisanceGroup
accessing the mc_bonly

Some print out for when an unkwon group is asked for
Merge pull request #154 from nucleosynthesis/nckw-add-NOT-nuisance-groups

Added possiblity to freeze nuisance that are not in a group.
can clear the _morphParams pointers so these are updated to the variables copied into the workspace
Merge pull request #155 from ajgilbert/hist-pdf-import

FastVerticalInterpHistPdf2 import
Cherry picking commit to SLC6 branch
can clear the _morphParams pointers so these are updated to the variables copied into the workspace
Merge pull request #156 from nucleosynthesis/cherry-pick-from-slc6

Cherry picking commit to SLC6 branch
Adding plots to output of diffNuisances

if output file specified, additional plots of the post fit
and prefit nuisances and errors are saved.
Bug fix for #138.
Closes #153.
Merge pull request #157 from nucleosynthesis/add-plots-to-diffnuisances

Adding plots to output of diffNuisances
Adding plots to output of diffNuisances

if output file specified, additional plots of the post fit
and prefit nuisances and errors are saved.
Merge pull request #159 from nucleosynthesis/cherr-pick-plots-for-diffnuisances

Adding plots to output of diffNuisances
Invert initaliser after having inverted logic.
fix post-fit nuisance plots
Merge pull request #160 from nucleosynthesis/fix-nuisance-plot

fix post-fit nuisance plots
Adding ability to group nuisances NOT in a specfic group
run --freezeNuisanceGroup ^name to freeze all nuisances
not in group "name"

Additionally fixed a bug causing a crash when using freezeNuisanceGroup
accessing the mc_bonly

Some print out for when an unkwon group is asked for

Conflicts:
	src/Combine.cc
no starts_with in boost::algorithm (gcc version)
Merge pull request #162 from nucleosynthesis/nckw_cherry_pick_not_groups

Nckw cherry pick not groups
Merge pull request #158 from adavidzh/limit-boundary-checks

Bug fix for #138.