When writing text in password field with IME, the text being composed is visible and is also allowed as entry to the password text.

Qt 4.x did not allow non-ascii text to be inserted in password mode, the IME was disabled for the QLineEdit.

Steps to reproduce:

• Run attached sample
• Write text with IME
• EXPECTED: Only the entered ascii letters are accepted
• ACTUAL: Non-ascii letters are accepted, and when composing those non-ascii letters/words (i.e. word being composed out of kanjis in Japanese), the composed word is visible until it has been accepted with enter-key