Prompt user before overwriting modified input file text.

Change-Id: I154eb158ca9e7162ec598fd562d76457bc1eb292
Remove TODOs.

These have been entered into the bug tracker.

Change-Id: I62452918c05c6e86e8daa64ef66dab108a4ee5bb
Merge topic 'InputGeneratorWarnIfModified' into master

b979ef69 Remove TODOs.
2e0d95a6 Prompt user before overwriting modified input file text.