Fix typos

When TFoam is pre-sampling a phase space, it may divide by zero if for
some reason the event weight being generated is zero. This stops the generator
loop, and leads to a fp exception when enabled.
With this fix, the loop is kept running until the desired number of events
has been generated.

This is necessary to avoid ROOT's installed cmake modules
to point to the build directory when using builtin GSL, since
$GSL_LIBRARIES is the full path to <BINARY_DIR>/lib/libgsl.so
when using builtin GSL.

[RF][Docs] Documentation updates / fixes collected througout june.

When builtin_vdt=ON, vdt headers are in ${CMAKE_BINARY_DIR}/include
and libvdt.so is in ${CMAKE_BINARY_DIR}/lib, so we don't need to add
the extra include directory. Once ROOT is installed, the Vdt headers
and library will be along with ROOT ones, so they can also be found
without needing anything else either.

Fixes: ROOT-10197

to its specialisation.

Use default copy constructor and assignment operator for Plane3D

* Fix optimal step size when computating gradient for  confidence intervals. This fixes ROOT-9839. Also the fixed parameters are now correctly handled, although before, their contribution was not included due to their zero value in the covariance matrix

- MnCross: Set default assignment operator
- MinosError: Set default assignment operator
- ABObj: Delete private assignment operator

Now `fMin` and `fMax` data members are initialized respectively to
`TMath::Limits<Double_t>::Max()` and `TMath::Limits<Double_t>::Min()`.

In `Fill` method now there is no need to initialize the min and max values
at first iteration.

The `ClassDef` version has been increased to 3 to reflect the changes made to the class.

The TStatistic class now includes computation of minimum and maximum values
of the vector passed to the constructor.

These values have been added both to the `Print` and `Merge` functions.

The testTStatistic.cxx test file has been updated accordingly to check that the class
correctly computes min and max values.

Collection of small documentation fixes in various RooFit classes.

This reverts commit 1047b9cd.

Reverting RVec's SBO implementation until we have a proper fix
for the crashes seen in ROOT-10079.

This reverts commit 53171baf.

Reverting RVec's SBO implementation until we have a proper fix
for the crashes seen in ROOT-10079.

This reverts commit 4149e4fa.

Reverting RVec's SBO implementation until we have a proper fix
for the crashes seen in ROOT-10079.

This reverts commit 7d450e33.

Reverting RVec's SBO implementation until we have a proper fix
for the crashes seen in ROOT-10079.

It redirects calls to Minimizer if it stored in the FitResult

[Doc] improve TStatistic documentation

This reverts commit 4846a973.

This reverts commit ff376578.

This reverts commit 9e38c890.

This change is useful for cases when TStatistic objects filled by implicitly parallel ROOT components, e.g. RDataFrame.