Avoid pulling in "Extending Manual" into Qt Creator manual.

With Qt5, qdoc finds the doc/api/*.qdoc files if the examplesdir points
to doc/, leading to the two toplevel index.html files ending up within
qtcreator.qch

Change-Id: I4ac3c1447c6924c4e292024919d52ddb97e1f8cc
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

doc/config/qtcreator-project.qdocconf

@@ -5,7 +5,7 @@ headerdirs =
 sourcedirs = $SRCDIR/src
 imagedirs = $SRCDIR/images $SRCDIR/templates/images
 outputdir = $OUTDIR
-exampledirs = $SRCDIR
+exampledirs = $SRCDIR/examples
 indexes                 = qt.index
 
 include(compat.qdocconf)

doc/src/qtquick/qtquick-app-tutorial.qdoc

@@ -207,7 +207,7 @@
 
             The qml.main file should now look as follows:
 
-            \snippet examples/transitions/qml/Transitions/main.qml 0
+            \snippet transitions/qml/Transitions/main.qml 0
 
         \o  In the \gui Navigator pane, copy topLeftRect (by pressing
             \key {Ctrl+C}) and paste it to the canvas twice (by pressing
@@ -259,7 +259,7 @@
 
             The qml.main file should now look as follows:
 
-            \snippet examples/transitions/qml/Transitions/main.qml 1
+            \snippet transitions/qml/Transitions/main.qml 1
 
         \endlist
 
@@ -360,6 +360,6 @@
 
     When you have completed the steps, the main.qml file should look as follows:
 
-    \snippet examples/transitions/qml/Transitions/main.qml 2
+    \snippet transitions/qml/Transitions/main.qml 2
 
 */

doc/src/widgets/qtdesigner-app-tutorial.qdoc

@@ -216,7 +216,7 @@
             \c{Ui::TextFinder} pointer, as illustrated by the following code
             snippet:
 
-            \snippet examples/textfinder/textfinder.h 0
+            \snippet textfinder/textfinder.h 0
 
     \endlist
 
@@ -236,12 +236,12 @@
             {setPlainText()}.
             This is illustrated by the following code snippet:
 
-            \snippet examples/textfinder/textfinder.cpp 0
+            \snippet textfinder/textfinder.cpp 0
 
         \o  To use QFile and QTextStream, add the following #includes to
             textfinder.cpp:
 
-            \snippet examples/textfinder/textfinder.cpp 1
+            \snippet textfinder/textfinder.cpp 1
 
         \o  For the \c{on_findButton_clicked()} slot, add code to extract the
             search string and use the
@@ -250,13 +250,13 @@
             to look for the search string within the text file. This is
             illustrated by the following code snippet:
 
-            \snippet examples/textfinder/textfinder.cpp 2
+            \snippet textfinder/textfinder.cpp 2
 
         \o  Once both of these functions are complete, add a line to call
             \c{loadTextFile()} in the constructor, as illustrated by the
             following code snippet:
 
-            \snippet examples/textfinder/textfinder.cpp 3
+            \snippet textfinder/textfinder.cpp 3
 
     \endlist
 

doc/src/widgets/qtdesigner-plugins.qdoc

@@ -87,13 +87,13 @@
         \o  To check the paths used in the Qwt library, enter the following
             \c otool command:
 
-            \snippet examples/doc_src_plugins.qdoc 0
+            \snippet doc_src_plugins.qdoc 0
 
             The output for Qwt 5.2.1 indicates that the plugin uses Qt core
             libraries (QtDesigner, QtScript, QtXml, QtGui and QtCore) and
             libqwt.5.dylib:
 
-            \snippet examples/doc_src_plugins.qdoc 1
+            \snippet doc_src_plugins.qdoc 1
 
 
         \o  You must copy the \QD plugin and the Qwt library files to the
@@ -110,21 +110,21 @@
 
             Enter the following commands:
 
-            \snippet examples/doc_src_plugins.qdoc 4
+            \snippet doc_src_plugins.qdoc 4
 
         \o  Enter the following \c otool command to check the libraries that are
             used by the Qwt library:
 
-            \snippet examples/doc_src_plugins.qdoc 2
+            \snippet doc_src_plugins.qdoc 2
 
             The command returns the following output:
 
-            \snippet examples/doc_src_plugins.qdoc 3
+            \snippet doc_src_plugins.qdoc 3
 
         \o  Enter the following \c install_name_tool command to fix the
             references of the libraries:
 
-            \snippet examples/doc_src_plugins.qdoc 5
+            \snippet doc_src_plugins.qdoc 5
 
     \endlist