[PATCH] xfail tests that failed with clang-3.7, gcc4.8.2 and on i386 to get buildbot green

[Ying Chen]

List of ignored tests,

For clang>=3.6,
FAIL: LLDB (suite):: TestCPPThis.py

For gcc, 
FAIL: LLDB (suite):: TestMiBreak.py
FAIL: LLDB (suite):: TestPluginCommands.py
FAIL: LLDB (suite):: TestRegisterVariables.py
FAIL: LLDB (suite):: TestTargetWatchAddress.py
FAIL: LLDB (suite):: TestTypedefArray.py
FAIL: LLDB (suite):: TestWatchLocation.py
FAIL: LLDB (suite):: TestWatchLocationWithWatchSet.py
FAIL: LLDB (suite):: TestWatchpointSetErrorCases.py

For i386,
FAIL: LLDB (suite):: TestDataFormatterStdVBool.py
FAIL: LLDB (suite):: TestMiExec.py
FAIL: LLDB (suite):: TestNoreturnUnwind.py


http://reviews.llvm.org/D8573

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