[Lldb-commits] [PATCH] Fix evaluation commands (MI)

[Ilia K]

Hi abidh, clayborg,

These changes include:
* Fix -var-create to be able use current frame '*' (MI)
* Fix print-values option in -var-update (MI)
* Fix 'variable doesn't exist' error in -var-show-attributes (MI)
* Mark print-values option as 'handled-by-cmd' in -var-update (MI)
* Fix SBValue::GetValueDidChange if value was changed
* Fix lldb-mi: -data-evaluate-expression shows undef vars. Before this fix -data-evaluate-expression perceives undefined variables as strings:
```
(gdb)
-data-evaluate-expression undef
^done,value="undef"
```
* Minor fix: -data-evaluate-expression uses IsUnknownValue()
* Enable MiEvaluateTestCase test

http://reviews.llvm.org/D7463

Files:
  source/API/SBValue.cpp
  test/tools/lldb-mi/TestMiEvaluate.py
  tools/lldb-mi/MICmdCmdData.cpp
  tools/lldb-mi/MICmdCmdVar.cpp
  tools/lldb-mi/MICmdCmdVar.h

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