Well I'm a
so don't know how much help I can be but....
glibc or at least parts of it had better be installed... my understanding is that glibc is pretty fundemental to the running of Linux. However most distro's split things like this in to several smaller chunks as you've discovered.
Run through the installer for Red Hat (it was Red Hat you use right?) look for something called "glibc-devel" or similar; this should provide the libraries it's looking for (a lot of distro's don't actually stick the loadable modules/source for stuff in unless you explicitly tell them).
libdb-4.1.so is needed by kdevelop-3.0.2-0.1
well, I recognise the db-4 bit. It might be the Berkley DB routines it wants... kinda makes sense condisering what KDevelop is
Again hunt through the installer for your distro and look for Berkley Database, install anything marked as -devel for it and that should hopefully be that
Try boshing the Kdevelop install again. Also you might find when install KDE 3.2.x that it's better to install the Qt rpms first, then arts and then the KDE stuff.