Fix keyboard layout icon in taskbar notification area. JIRA issue: CORE-11700, CORE-2699, CORE-18546
- Call ActivateKeyboardLayout to select the keyboard layout correctly.
- Modify WM_INPUTLANGCHANGEREQUEST parameter.
- Modify BroadcastSystemMessageW parameter.
- Revert Taskbar Notification Area MA_NOACTIVATE HACK 8344291 . This fixes Context Menu display.
- Load the "IME File" value and set the IME icon if necessary.
- Correctly implement global hooks.
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.