gui: configurable synchronization between file browser and octave directory * default-qt-settings: all settings of the file browser are now located in its section, new setting sync_octave_directory * files-dock-widget.cc(constructor): make QToolBar and QAction variables local, add two buttons for syncing from octave to file browser and vice versa, change status-tips into tool-tips * files-dock-widget.cc(set_current_directory): do not emit signal displayed_directory_changed (would change octave dir) * files-dock-widget.cc(do_sync_octave_directory): new function for manually setting the octave dir to the one in the file browser * files-dock-widget.cc(do_sync_browser_directory): new function for manually setting the file browser to the octave directory * files-dock-widget.cc(update_octave_directory): new function called from the main-window when the octave directory has changed * files-doc-widget.cc(display_directory): new second parameter (bool, default is true) determining whether the signal with the new displayed directory should be emitted if synchronizing is enabled * files-dock-widget.cc(notice-settings): read new setting, enalbe or disable the sync buttons and set file browser to octave directory depending on setting * files-dock-widget.h: removed QToolBar and QAction variibles, new varaibles for storing the actual octave directory and whether syncing is desired or not, new functions (do_sync_octave_directory, do_sync_browser_directory, update_octave_directory), function display_directory with second parameter (bool, default true) * libgui/src/icons/ok.png,libgui/src/icons/reload.png: new icons for the toolbar * main-window.cc(change_directory): call new function update_octave_directory instead of display_directory * main-window.cc(construct-window-menu): rename "Current Directory" into "File Browser" * libgui/src/module.mk: new files icons/ok.png and icons/reload.png * settings-dialog.cc(constructor,write_changed_settings): all files-dock-widgets settings in a section, new setting sync_octave_directory * settings-dialog.ui: new setting sync_octave_directory

      SUBROUTINE DDAWTS (NEQ, IWT, RTOL, ATOL, Y, WT, RPAR, IPAR)
C***BEGIN PROLOGUE  DDAWTS
C***SUBSIDIARY
C***PURPOSE  Set error weight vector for DDASSL.
C***LIBRARY   SLATEC (DASSL)
C***TYPE      DOUBLE PRECISION (SDAWTS-S, DDAWTS-D)
C***AUTHOR  PETZOLD, LINDA R., (LLNL)
C***DESCRIPTION
C-----------------------------------------------------------------------
C     THIS SUBROUTINE SETS THE ERROR WEIGHT VECTOR
C     WT ACCORDING TO WT(I)=RTOL(I)*ABS(Y(I))+ATOL(I),
C     I=1,-,N.
C     RTOL AND ATOL ARE SCALARS IF IWT = 0,
C     AND VECTORS IF IWT = 1.
C-----------------------------------------------------------------------
C***ROUTINES CALLED  (NONE)
C***REVISION HISTORY  (YYMMDD)
C   830315  DATE WRITTEN
C   901009  Finished conversion to SLATEC 4.0 format (F.N.Fritsch)
C   901019  Merged changes made by C. Ulrich with SLATEC 4.0 format.
C   901026  Added explicit declarations for all variables and minor
C           cosmetic changes to prologue.  (FNF)
C***END PROLOGUE  DDAWTS
C
      INTEGER  NEQ, IWT, IPAR(*)
      DOUBLE PRECISION  RTOL(*), ATOL(*), Y(*), WT(*), RPAR(*)
C
      INTEGER  I
      DOUBLE PRECISION  ATOLI, RTOLI
C
C***FIRST EXECUTABLE STATEMENT  DDAWTS
      RTOLI=RTOL(1)
      ATOLI=ATOL(1)
      DO 20 I=1,NEQ
         IF (IWT .EQ.0) GO TO 10
           RTOLI=RTOL(I)
           ATOLI=ATOL(I)
10         WT(I)=RTOLI*ABS(Y(I))+ATOLI
20         CONTINUE
      RETURN
C-----------END OF SUBROUTINE DDAWTS------------------------------------
      END