msctf: Add locking flags.

include/textstor.idl

@@ -38,6 +38,9 @@ const DWORD TS_AS_STATUS_CHANGE    = 0x10;
 
 const DWORD TS_AS_ALL_SINKS = (TS_AS_TEXT_CHANGE | TS_AS_SEL_CHANGE | TS_AS_LAYOUT_CHANGE | TS_AS_ATTR_CHANGE | TS_AS_STATUS_CHANGE);
 
+const DWORD TS_LF_SYNC            = 0x1;
+const DWORD TS_LF_READ            = 0x2;
+const DWORD TS_LF_READWRITE       = 0x6;
 
 typedef [uuid(05fcf85b-5e9c-4c3e-ab71-29471d4f38e7)]  enum { TS_AE_NONE, TS_AE_START, TS_AE_END } TsActiveSelEnd;
 typedef [uuid(033b0df0-f193-4170-b47b-141afc247878)]  enum { TS_RT_PLAIN, TS_RT_HIDDEN, TS_RT_OPAQUE } TsRunType;