Description of problem:
The following messages are output during kmod installation.

[root@dhcp47-139 dup]# rpm -ihv kmod-dup_cert_pass-1.0-0.ia64.rpm 
Preparing...                ########################################### [100%]
   1:kmod-dup_cert_pass     ########################################### [100%]
modinfo: could not open /lib/modules/2.6.18-121.el5/extra/dup_cert_pass: Is a directory
FATAL: /lib/modules/2.6.18-121.el5/extra/dup_cert_pass: Is a directory
Warning: Module dup_cert_pass from kernel  has no modversions, so it cannot be reused for kernel 2.6.18-120.el5
modinfo: could not open /lib/modules/2.6.18-121.el5/extra/dup_cert_pass: Is a directory
FATAL: /lib/modules/2.6.18-121.el5/extra/dup_cert_pass: Is a directory
Warning: Module dup_cert_pass from kernel  has no modversions, so it cannot be reused for kernel 2.6.18-122.el5

Version-Release number of selected component (if applicable):
redhat-rpm-config-8.0.45-27.el5

How reproducible:
Always.

Steps to Reproduce:
1. Install two or more kernels in the system.
2. Install your kmod RPM that was built on 5.3 environment.
  
Actual results:
The messages are output.

Expected results:
No messages are output.

Additional info:
- Seems the changes to the logic to obtain the paths of modules in kmodtool are the cause of the problem.
    Old: modules=( \$(rpm -ql kmod-${kmod_name}${dashvariant} | grep '\.ko$') )
    New: modules=( \$(find /lib/modules/${verrel}${variant}/extra/${kmod_name}) )
  find returns directories as well, making modinfo complain.
- Because of above, an installation of kmod that was built on 5.2 environment completes without the messages.  (The kmod contains the old logic in itself.)