This option is ported from ROOT 5.x but disabling it makes
compilation break since a long time. Fixes: ROOT-9449.

The new cmake option `dataframe` enables building the ROOTDataFrame
library and takes care of implication on the build system. The option is
enabled by default unless a 32bit system is detected.

This reverts commit a7d45455.

This is done by taking the check of fUniqueID and the assignment to fBuits
into a separate function and by including this function in the header
*but* marking it as "noinline" to prevent its inlining and preserve a
way to suppress the valgrind warning.

Introducing the macro R__NEVER_INLINE which expands to

   inline __attribute__((noinline))

The performance degradation is less than 10% for a case doing
only creation and destruction of TObjects.

This reverts commit 83e5d9f45c76914118501652e0c53ff56793fefe.

This is required, for example, when building roottest externally
to find and run hsimple.C with root to generate hsimple.root.

ROOT-9956 #close

Tests are only meant to be run during the build,
not to be installed as part of ROOT.

Now default location for JSROOT is <prefix>/js
For Openui5 files is <prefix>/ui5

This is part of Rfio authentication, which has been deprecated and
removed along with RFIO support.

Fixes: ROOT-9695, ROOT-9805

In core/zip/inc/Compression.h was introduced RCompressionSetting class with set of enumerated classes for compression level, compression algorithm and default compression settings

unless we are not on osx and gcc the gcc major is 4.