When I did yum install gedit-devel, where did it get put? How do I find out such things? Do I do something in yum, or in rpm, or what?
To find out which files are in a package, use:
$ rpm -ql packagename
e.g.
$ rpm -ql gedit-devel
Or for even more info, add the "verbose" option:
$ rpm -qlv gedit-devel
Paul.