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.

Add a protection when trying to set text to a non-existant part of the status bar. This fixes Jira #ROOT-8474 Setting status bar of TRootBrowser to 1 column produces error message if a TCanvas is also open.

Introduce a small function to prevent memory leaks with TSystem::ExpandPathName, which returns a string created by StrDup, that has to be deleted

Fix an update issue with combo boxes created without text entry, as reported on the forum (https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=22554)

this is done also to speedup execution in contexts where filesystems
such as cvmfs are used.
This is achieved forgetting the include paths passed to rootcling with "-I"s
when building ROOT and not remembering the directory where the dictionary
is built.

Apply fixes in SetParameters to take correctly into account fit option "B" only when the parameters are set. This should fix ROOT-7522.
Improve also handling of step-size and errors in the Fit Parameter dialog
Fix also an issue when exiting the Fit Panel (thanks to Omar)

Opening any menu item after clicking 'Quit ROOT' but before the windows is
actually closed (there is a non-negligeable time window where you can),
will lead to a crash (or at least the reuse of a delete object).

This is because open the menu item was registering the pop menu with the
TGClient but the canvas destructor was deleting the C++ object representing
the pop menu without unregistering it from the TGClient.

This is fixed by forcing the unregistration from the TGPopupMenu destructor.

This solves a timing issue when browsing files containing thousands of keys

Remove trailing white spaces.

TGObject has class-version 0, and the GUI base class
certainly should not undergo IO.

Signed-off-by: Oliver Freyermuth <o.freyermuth@googlemail.com>

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

Compute automatically parameters for bigaus when fitting

Either include the missing header files or add forward declarations,
where the complete types are not required.

Document the move to ROOT::Internal and ROOT::Details

Fix issue reported on the forum (Double conversion fails for negative values when using *MENU* setter function - https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=20397&sid=62d836defc126dac61048e9706d6ecfe)

Note that the real problem comes from "TObject::Execute(const char *method, const char *params, Int_t *error)" and remains to be investigated

Fix Jira issue #ROOT-7547 SetDrawOption twice in GUI pops an empty panel (Option_t* is the same than char*)

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>

Make sure the correct browser is created (fix issue reported on the forum - https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=20099)

Fix the following Coverity issues:
CID 61230 (Unchecked return value)
CID 56101 (Uninitialized scalar field)
CID 55010, 55005 (Dereference after null check)
CID 55004 (Explicit null dereferenced)
CID 54807 (Same on both sides)
CID 48060 (Dereference null return value)