(cherry picked from commit b641485c)

[RF] Extend RooChebychev to arbitrary orders.

Instead of hard-coding the polynomials to 7th order, a more scalable implementation
based on the recursive definition of the polynomials is used.
The computation time grows linearly with the order of the polynomials.

FMA is used if supported by the underlying architecture/compiler.
Otherwise, the code falls back to normal floating point arithmetic.

When drawing a TPad, it gets added to the list of primititves of its
mother TPad (fMother) with kCanDelete == 1. This means that, when
fMother is destructed, it will attempt to destroy its child TPad too.
To prevent a double delete, here we instruct the Python proxy of the
child C++ TPad being drawn not to destroy the latter (ROOT-10060).

A similar principle is applied to TButton, TColorWheel, TPolyLine3D,
TPolyMarker and TPolyMarker3D, whose kCanDelete bit is set in one of
their constructors. Later, when being drawn, they are appended to
the list of primitives of gPad.

TSlider is a special case, since it is appended to gPad already
in one of its constructors, after setting kCanDelete.
Therefore, we need to set the ownership when constructing the
object and not in Draw (TSlider does not need to be drawn).
This is ROOT-10095.

the right spelling is correspondence.

We do not want -Dall=ON enabling unsupported options, like
Davix support on Windows, etc.

Fixes: ROOT-9086

The branch name information was not passed correctly to base classes

They were missing a crucial comment header, making the documentation
generation system not pick them up.

this will allow to maintain a standalone version of VMC in parallel, which can be then tagged more frequently according to the needs of the VMC project

the goal was to avoid tutorial names appearing as namespaces.
The change removes from the doc also the tutorials, which is not
acceptable.

See https://root-forum.cern.ch/t/trefarray-apears-empty-reading-via-makeclass/32903/5

ROOT_ADD_TEST cmake macro adds a test executable by invoking
CMAKE_COMMAND -DCMD=... This breaks our FindLibraryName function
which depends on dladdr and the cmake executable confuses it.

This branch is not taken outside of ctest where the code just works.

This was broken before but worked because we scanned all possible
dynamic paths for rdict files which is redundant.

This reverts commit e483e41b.

This reverts commit fc9f3078.

Provide sorting of these entries afterwards - like first show dirs, then
files.

Correctly handle request to same directory - reuse already build list of
items

Eliminate duplictaed model from geom viewer itself