8172753: Improve style of left-side index pages Reviewed-by: bpatel

8169608: Compiler Tree API's Doctrees.getDocTreePath needs to accept a PackageElement 8157611: field visiblePackages is null for the unnamed module producing NPE when accessed Reviewed-by: jjg, jlahoda

8171130: jshell tool: /edit adds empty statement to brace terminated snippet 8173007: JShell Tests: ToolFormatTest takes too long Reviewed-by: jlahoda

8172179: jshell tool: builtin startup settings should be by reference not content Reviewed-by: jlahoda