More KDevelop patches

[Nir Mardiks]

(sorry about the previous bad patches, hopefully the patches I make are 
getting better).

Anyhow, the patches included contain the following:
A) Fix so that if you correct a re-search an help on - the window will 
refresh itself. Previously, the file on the disk was updated but KDevelop's 
help window continued to show the previous search result.
B) A change so that whenever the user asks to watch a variable from the 
editor - KDevelop makes sure the watches tab is visible
C) New list of file types for the file->open dialog to contain all the file 
types known (taken from CProject)
D) Fix, for computers which have glimpse and htdig, when the user works with 
htdig - the search failed because useGlimpse contained true for some reason.
E) A few changes for the Watches:
    1) Now the watches pane can be traversed using the keyboard (made 
focusable).
    2) Watches can be deleted using DEL key.
    3) Watches can be updated by double-clicking on them and editing the text 
(or right-click -> Update watch variable)

That's about it...

Two things I couldn't fix that really annoyed me:
1) For some reason in the update watch variable, calling rename() only once 
didn't work - I had to call rename() twice... - any idea ?
2) KLineEdit seems to have a bug which causes enterPressed to be called twice 
(this makes the same variable appear twice in the watches pane).
3) KHTMLPart doesn't seem to have a refresh function - had to call 
openURL("file:/") before re-opening the real URL to make things work...

Hopefully you'll find the patches useful,
  Nir.
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