* gdb.gdbtk/browser.test,browser.exp: Add browser window tests. * gdb.gdbtk/stack1.c,stack2.c: Test case for browser window.
* configure.in: Add options for gdbtk testsuite. * configure: Regenerate. * gdb.gdbtk: New directory to hold gdbtk tests. * gdb.gdbtk/console.{exp, test}: New console window tests.