6737900: TEST: Some JDI regression tests timeout on slow machines
Summary: Don't execute useless code, and split test into multiple @runs.
Reviewed-by: tbell
cfeea66a3fa8ca3686a7cfa2d0ce8ab0169f168d jdk7-b24
cbc8ad9dd0e085a607427ea35411990982f19a36 jdk7-b25
9410f77cc30c604d1caf7c9fe3a57fa19e1acbe8 jdk7-b26
11b4dc9f2be3523ef989a0db8459eb56b3045c3a jdk7-b27
56652b46f328937f6b9b5130f1e4cd80f48868ef jdk7-b28
31e08f70e88d77c2053f91c21b49a04296bdc59a jdk7-b29
2dab2f712e1832c92acfa63ec0337048b9422c20 jdk7-b30
3300a35a0bd56d695b92fe0b34f03ebbfc939064 jdk7-b31