#333 Tcl bingings readme and tests

[Nikita Vinokurov]

Write tcl binding readme and tests

[Alex V Breger]

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Example of usage tcl bindings
load "tcl/.libs/libvrbtcl.so"
msInit
set ms [msCreate xxx]
set txn [msBeginTxn]
puts $ms
puts $txn
set result [msSet $ms $txn {{{} a} {{} b} {{} c} {{} d}}]
msCommitTxn $ms $txn
set txn [msBeginTxn]
puts [msGet $ms $txn {{{} a} {} {} {}}]
foreach result [msGet $ms $txn {"" "" "" ""}] {
puts $result
}
msCommitTxn $ms $txn