Turned off by default on PCs with memory > 4G; Force turned on PCs with memory < 1G.
- enhancement: add "goto block start"/"goto block end" in "Code" menu
- fix: correctly display statements whose parent is not in the current file
- fix: statements is the class browser is correctly sorted
- enhancement: Weither double click on the class browser should goto definition/declaration, depends on the current cursor position
- enhancement: auto save/restore debug panel's current tab
- fix: correctly restore left(explorer) panel's current tab
- enhancement: auto close non-modified new editor after file/project openned;
- fix: project files openned by double click in bookmark/breakpoint panel may cause app crash when closed.
- fix: When open a project that's already openned, shouldn't close it.
- enhancement: When open a project, let user choose weither open it in new window or replace the already openned project