Our two build systems can generate almost entirely a modulemap file laying out
one module per library. Due to some non-modular implementation in ROOT's core we
still need to treat some header files specially.

This patch appends modular header files to the modulemap while skipping the
predefined ones. Configure-make relates all headers that are installed in
$ROOTSYS/include to their library whereas relates only headers which are part of
library's dictionary.

- Fetch the vdt tarball from the ROOT tarballs repository
- Build it with vector signatures
- Remove the stressVdt test and move it to roottest 8ad3fd

Improve also DataRange interface for multiple ranges.
Fix error messages in Fitter class

Use for N=256 the new mixmcx version 2.0 after defining right SPECIAL value and the MOD_MULSPEC function

This allows us to turn off -Wno-deprecated-declarations, to make R__DEPRECATED useful.

Simplifies tools life, clarifies which file we are referring to.
And helps with #include "TFile.h" from a ROOT/ header.

  * Do not include header files outside include protectors;
  * Turn comment into a proper diagnostics;
  * Use spaces instead of tabs.

Remove some debug statement and add inclusion of C headers before including then inside an anonymous namespace

Remove from TRandom integer parameter in Rndm. No more Rndm(int)
Add new MixMax version (2.0) and use differentt N, N=240, N= 17 and include also mixmamx1.0 for N=256
Improve MixMaxEngine class by adding a template N and a decimation number S (which default = 0)
Implement also in library some TRandomGen based on std engines (Mersenne-Twister 64 and Ranlux 48).