Make use of the gcctoolchain option (needed for llvm/clang on Linux)
Suppress warning for Dcache plugin
Fix for ROOT-6837 (AliEn cmake include variable and Installation instructions)
When an histogram was drawn with the option `E0` and log scale along the Y axis,
  some additional markers were drawn at the bottom line of the plot. This was
  reported <a href="http://root.cern.ch/phpBB3/viewtopic.php?f=3&t=18778">here</a>.
Fix for ROOT-6850
Properly support gcc 4.7 in C++11 (no thread_local yet)
Properly support gcc 4.7 in C++11 (no thread_local yet)
Write a .rootrc to run the tutorials....
Corrected mistake to use /tmp instead of /etc for proof sandbox
Coding convention
Reset branch address before pulling the rug.
Add explicit instantiation request for TTreeFormula::EvalInstance.

This fixes ROOT-6856, i.e. build on OSX 10.10 Yosemite
Fix stringstream dictionary on Windows with VC++11 (2012)

Fix the TListAndSTL.C tutorial and the problem reported on the forum:
http://root.cern.ch/phpBB3/viewtopic.php?f=3&t=18835
Better line width matching with screen and pdf output.
Do not display a dialog box if a symlink cannot be resolved.
Add --enable-cxx14 and --cflags to the configure script.

For now --enable-cxx14 uses -std=c++1y

--cflags should be used when custom configuring ROOT with compiler flags that
affects binary compatibility (like -std=c++1y for example)

This prevents this kind of important customization, historically done
in MyRules.mk, from being 'forgotten' from root-config.
Fix type in ifeq
Add a protection preventing a potential infinite loop

Prevent a potential infinite loop when looking for the etc subdirectory (i.e. when reaching C:\). This fixes the Jira issue #ROOT-6833
Merge branch 'v5-34-00-patches' of https://github.com/root-mirror/root.git with resolved conflicts.