When renaming items in Dolphin, only the name should be selected, not the extensions...

When renaming items in Dolphin, only the name should be selected, not the extensions like ".gif", ".txt" etc. The inconvenient part is if the item name is something like "cmake-2.4.5", where the version number does not count as extension (-> the whole string should be selected in this case).

This patch should fix the problem...

Examples (name -> selected string):
"Image.gif" -> "Image"
"package.tar.gz" -> "package"
"cmake-2.4.5" -> "cmake-2.4.5"
"Image.1.12.gif" -> "Image.1.12"
"Image.tar.1.12.gz" -> "Image"

svn path=/trunk/KDE/kdebase/apps/; revision=666118