When fitting an histogram, draw the histogram only if it has not already drawn before. This fixes the issue observed when fitting an histogram drawn in a canvas together with many other histogram (see http://root.cern.ch/phpBB3/viewtopic.php?f=3&t=18071)
OSX: allow ./configure with only Command Line Tools

As it is now, ROOT can't be built with Cocoa and ./configure without full Xcode
installation.  The problem is that Command Line Tools don't provide SDK the way
Xcode does.  This patch allows detecting system-wide frameworks available at
/System/... .

Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>
use $\pm$ for plus-minus symbol to avoid problem during pdf generation.
ignore documentation products.
use expr instead of let as Linux /bin/sh does not support let (is not bash).
make functions legal C++.
remove spurious trailing blank.
- Remove white spaces
- Reactivate the Pad printing.
fix https://sft.its.cern.ch/jira/browse/ROOT-6305
correct case of cover file name.
Fix https://sft.its.cern.ch/jira/browse/ROOT-6303
Add stressHistFactory_ref.root and stressRooStats_ref.root in the binary distribution
Add HistFactoryTest.tar to the binary distribution
Improve the title of the projected histograms obtained when using SetHowProjections.
Apply patch for the 2D projections from Olivier Freyermuth.
Add similar improvements in case of the 3D projections
Add color setters allowing the transparency definition.
Fix a warning message on gcc caused by previous commit in THIstPainter
add missing includes needed for ACliC.
Fix for installation when ROOTSYS is not defined (fix ROOT-5057)
Rename the method setting the color with an alpha value.
SetShowProjection was dummy in the GL case.