* gdb.base/callfuncs.exp: Make all test names unique.
* gdb.base/commands.exp: Make all test names unique.
* gdb.base/condbreak.exp: Make all test names unique.
* gdb.base/dbx.exp: Make all test names unique.
* gdb.base/default.exp: Make all test names unique.
* gdb.base/define.exp: Make all test names unique. Conform some FAIL
and TIMEOUT messages to their corresponding PASS message.
* gdb.base/ending-run.exp: Make all test names unique.
* gdb.base/long_long.exp: Remove duplicate test.