change in other directories the dependent files don't get recompiled.
Fixed up INCLUDEPATH in various places.
Removed -pthread as an INCLUDEPATH (leads to bogus -I-pthread).
Make "Object" text left-justified in tree view. Also put a 120 pixel
min width on tree view and make it non-collapsible so that the user
can't accidently hide the tree view entirely.
is visible, but not necessarily centered. Otherwise with a wide
tab for "Object" (but only some of the tab is visible) the text
might not be visible at all.