git-svn-id: file:///svn/toku/tokudb@40375 c7de825b-a66e-492c-adef-691d508d4ae1

Closes #2945.  close[t:2945]
{{{
svn merge -r 24888:24894 https://svn.tokutek.com/tokudb/toku/tokudb.2945
}}}
.


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A compiler directive to make compilation sweeter

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Also added errcall initializer
Addresses #240

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c++ interface is implemented (up to a point) and every method that can raise an exception is tested in exceptions.cpp.  Fixes #197, #215.

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DbEnv.set_errfile

toku_db_env_err now writes to the file from set_errfile
toku_db_env_err calls toku_db_env_err_vararg

Fixed DbException.set_env, and callers of it.
Modified test1 to not use exceptions, since the test tried to use return codes.

Closes #214
Addresses #197
Addresses #215

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the exception class is implemented, and for db.cpp and dbenv.cpp it is called.  Still need to do exceptions for dbc.cpp dbt.cpp txn.cpp.  Addresses #215.

git-svn-id: file:///svn/tokudb@1301 c7de825b-a66e-492c-adef-691d508d4ae1

DbEnv.set_data_dir, DbEnv.set_errpfx

Added tests for them.
Addresses #197

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test1 modified to test the new features.

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Modified test1 to test new functions and some of the older ones.
Addresses #197

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