Clover Release v5.1 r5134以降の最新コミット （5月8,9日）

210508-Fix device properties having a garbage name.
Bug was : xmlKey() wrongly return by value. Returning xmlKey().value()
by reference = returning a local object by reference. value() was
destroyed and referenced memory become garbage.

Clover_r5134-541182fcd1198d8820644bbcff7b503c90fd077c.pkg

210509-Add DoubleClickTime.
Stop ignoring Mouse parameters.
Fix visual studio compilation.
Fix some warnings.
Rename panic_ask to log_technical_bug.
etc.

Clover_r5134-2eb35b700ddcc7ff8b7cace2fee514a88c154638.pkg