Add a commnad to set a condition for a watchpoint.  Example:

    watchpoint modify -c 'global==5'

modifies the last created watchpoint so that the condition expression
is evaluated at the stop point to decide whether we should proceed with
the stopping.

Also add SBWatchpont::SetCondition(const char *condition) to set condition
programmatically.

Test cases to come later.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@142227 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed