class TRint: public TApplication

 Create an application environment. The TRint environment provides an
 interface to the WM manager functionality and eventloop via inheritance
 of TApplication and in addition provides interactive access to
 the CINT C++ interpreter via the command line.

 Destructor.

 Execute logon macro's. There are three levels of logon macros that
 will be executed: the system logon etc/system.rootlogon.C, the global
 user logon ~/.rootlogon.C and the local ./.rootlogon.C. For backward
 compatibility also the logon macro as specified by the Rint.Logon
 environment setting, by default ./rootlogon.C, will be executed.
 No logon macros will be executed when the system is started with
 the -n option.

 Main application eventloop. First process files given on the command
 line and then go into the main application event loop, unless the -q
 command line option was specfied in which case the program terminates.
 When retrun is true this method returns even when -q was specified.

 When QuitOpt is true and retrn is false, terminate the application with
 an error code equal to either the ProcessLine error (if any) or the
 return value of the command casted to a long.

 Print the ROOT logo on standard output.

 Get prompt from interpreter. Either "root [n]" or "end with '}'".

 Set a new default prompt. It returns the previous prompt.
 The prompt may contain a %d which will be replaced by the commend
 number. The default prompt is "root [%d] ". The maximum length of
 the prompt is 55 characters. To set the prompt in an interactive
 session do:
 root [0] ((TRint*)gROOT->GetApplication())->SetPrompt("aap> ")
 aap>

 Handle input coming from terminal.

 Handle exceptions (kSigBus, kSigSegmentationViolation,
 kSigIllegalInstruction and kSigFloatingException) trapped in TSystem.
 Specific TApplication implementations may want something different here.

 Terminate the application. Reset the terminal to sane mode and call
 the logoff macro defined via Rint.Logoff environment variable.

 Set console mode:

  mode = kTRUE  - echo input symbols
  mode = kFALSE - noecho input symbols

 Process the content of a line starting with ".R" (already stripped-off)
 The format is
      [user@]host[:dir] [-l user] [-d dbg] [script]
 The variable 'dir' is the remote directory to be used as working dir.
 The username can be specified in two ways, "-l" having the priority
 (as in ssh).
 A 'dbg' value > 0 gives increasing verbosity.
 The last argument 'script' allows to specify an alternative script to
 be executed remotely to startup the session.

 Forward tab completion request to our TTabCom::Hook().