document manual-update (using kdetoys as an example)

svn path=/trunk/KDE/kdesdk/scripts/kdesvn-buildrc-sample; revision=1078854

kdesvn-buildrc-sample

@@ -34,8 +34,8 @@ global
 	qtdir ~/qt4  # Default to installing Qt
 
 # By default (if the above is commented out), you are getting trunk.
-# If instead you want to check out another branch, like 4.3, use
-#	branch 4.3
+# If instead you want to check out another branch, like 4.4, use
+#	branch 4.4
 #
 # but also see the qt-copy and kdesupport modules below, which have special
 # requirements
@@ -257,6 +257,12 @@ end module
 
 # Contains nifty diversions of time, which generally aren't games.
 module kdetoys
+	# Let's explain a new kdesvn-build feature here, as an example:
+	# Say you don't want "./kdesvn-build" to always update and build kdetoys,
+	# but you want to specify options here (branch, cmake-options etc.) so that
+	# you can invoke "./kdesvn-build kdetoys" explicitly, now and then.
+	# The option manual-update does exactly this.
+	manual-update true
 end module
 
 # Educational programs.  Some are actually quite fun even if you're not trying