fix bug in sqlServerCloneConnection
add a new test to W/R large table
dbCreateTable:
* catch error
* replace dbGetQuery call by dbGetScalar
export make.db.names ( DBI interface)
print sql query when it fails
Use SqlBulkCopy tool for efficient insert of hudge table.
Sql server use [] as a keywords delimiter
add log4net config file
new test : create table with sql keuwords
add test if  the names are valid db names
add log4net , remove commented code
add log4net
add SqlBulkCopy process
Load log4net configuration from the dll entry point, to use the log from R.
log4 net config file
refactor file put it in source
remove transaction managment: should be done using scope transaction
refactor indent code
Add reference to System.Transactions
Init log for net: private function called in the static ctor
reorganize save and read hudge data frame
set global path to log: TODO find a smart solution