Debugger: Add context menu option to save stack as *.tasks file.
Debugger: Add context menu option to save stack as *.tasks file.

The task files can be attached to bug reports and then conveniently
loaded into the build issues pane for later investigation.

Change-Id: I463de957bf545ab89f630ab108f92cc253d81fa5
Reviewed-by: hjk <f81b91af79013637d070c18d38a75b90eaae8ba3@nokiamail.com>

xianian/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,darksylinc/qt-creator,xianian/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,xianian/qt-creator,maui-packages/qt-creator,omniacreator/qtcreator,danimo/qt-creator,farseerri/git_code,danimo/qt-creator,martyone/sailfish-qtcreator,maui-packages/qt-creator,omniacreator/qtcreator,darksylinc/qt-creator,farseerri/git_code,danimo/qt-creator,colede/qtcreator,kuba1/qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,colede/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,farseerri/git_code,farseerri/git_code,xianian/qt-creator,kuba1/qtcreator,omniacreator/qtcreator,amyvmiwei/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,colede/qtcreator,farseerri/git_code,maui-packages/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,xianian/qt-creator,danimo/qt-creator,Distrotech/qtcreator,danimo/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,darksylinc/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,farseerri/git_code,AltarBeastiful/qt-creator,kuba1/qtcreator,darksylinc/qt-creator,colede/qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,colede/qtcreator,danimo/qt-creator,darksylinc/qt-creator,omniacreator/qtcreator,colede/qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,kuba1/qtcreator,omniacreator/qtcreator,amyvmiwei/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,maui-packages/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,darksylinc/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,Distrotech/qtcreator,omniacreator/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,darksylinc/qt-creator