when removing old paths make sure that $path:, :$path and $path are only matched
at the beginning, at the end, or match the whole string.

The JIT was resolving some symbols in libCore through dlsym(libCling), even
though the dynamic linker uses these symbols through dlsym(process). This meant
the JIT and the process were using different addresses for symbols, causing
failures in JITted code.

By not linking libCling against libCore and libRIO, dlsym(libCling) cannot find
symbols in libCore and libRIO anymore.

We still need to expose libCling as a symbol source to the JIT to export llvm
and clang symbols from libCling to the JIT (they are hidden from the process).

As libCling now depends on libRIO implicitly (instead of linking against it),
libRIO must be dlopened before dlopening libCling.

This reverts commit 5c076c6c.

This reverts commit b406328d, reversing
changes made to 318c7a47.

  anti-aliasing for filled area for the Cocoa backend. Default is `no`.

Works for both cmake and classic builds.

Subdirs / modules still add it.

This allows doing

  source `root-config --prefix`/bin/thisroot.sh

instead of

  cd `root-config --prefix` && source bin/thisroot.sh

ROOT uses builtin gl2ps sources, but has no switch to use the system
library instead. This adds this missing option.

ROOT uses builtin unuran sources, but has no switch to use the system
library instead. This adds this missing option.

It is no longer used in gcc 6

Add an option to prevent expanding the parent directory tree in the ROOT Browser (for example on nfs)

Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>

Although it is not anymore the base build system, adding tbb support was
not too complicated and allows still easy testing of this new feature.
Use ./configure --enable-tbb. TBB needs to be preinstalled, there is no
support for the on the fly TBB installation featured supported by cmake.

This commit provides a task-based parallelisation of
TTree::GetEntry. The approach is based on creating a task per
top-level branch in order to do the reading, unzipping and
deserialisation in parallel.

Remove the ugly cxxmodule workarounds in graf3d: they don't really work anyway.
Instead, explicitly disable building with cxxmodules graf3d on macos due to
glew. Disable building with cxxmodules libs which still have bugs.

Improve the build system implementation scaffolding for cxxmodules.

Finally, with the introduced infrastructure and workarounds, ROOT builds and
runs with cxxmodules on (given one has newest clang, with my pending for
mainline patch). It seems that roottest is almost happy, too.