branch dev0.0.24
use encapsulated OCVariant in OLECall/OLEGet/OLESet accessor (rename call/get/set to OLECall/OLEGet/OLESet and create new functions call/get/set to V8Variant.prototype) and (define virtual getter _ and __) and (define constants vt_enum and vt_name)
move V8Variant.prototype.vt_enum and vt_name to win32ole.vt_enum and vt_names (V8Variant.prototype.vtName() -> OLEVTName())
modify src/v8variant.cc ( OLEGet / OLECall )
modify src/v8variant.cc ( merge OLECall() and OLEGet() to OLEInvoke() )
add comment to src/v8variant.cc
add global.ActiveXObject constructor
add test code to test/init_win32ole.test.js ( check exception in cells.call('Borders', [0]) => -2147352573 [0x8002000f] [can not call] / cells.get('Borders', [0]) => -2147352567 [0x80020009] [wrong parameter])