NOTE: The bug is related to "Red Hat Enterprise Linux Server release 7.0 Alpha3" but it wasn't in the products list, so i put under RHEL6.

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Description of problem:
While creating a kernel module package using kernel_module_package. The %{kernel_source $flavor} expands to a non-existing directory:
--------------------------------------------
make: *** /usr/src/kernels/3.7.0-0.36.el7-x86_64: No such file or directory.  Stop.
make: *** [kernel] Error 2
error: Bad exit status from /var/tmp/rpm-tmp.fl4iBx (%build)
--------------------------------------------
%{kernel_source $flavor} returned a path that doesn’t exist: /usr/src/kernels/3.7.0-0.36.el7-x86_64
it should return: /usr/src/kernels/3.7.0-0.36.el7.x86_64
with a dot "." instead of a hyphen before the architecture.


Also, rpm --eval %{kernel_module_package} gives:
%defattr(644,root,root,755)
/lib/modules/3.7.0-0.36.el7/
/lib/firmware/

1. The architecture is missing in path "/lib/modules/3.7.0-0.36.el7/".
it should be "/lib/modules/3.7.0-0.36.el7.x86_64/".
2. "/lib/firmware/" is not always needed by all packages, so i don't think that it should be here.

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Version-Release number of selected component (if applicable):
redhat-rpm-config-9.1.0-37.el7.noarch

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How reproducible:
always

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Steps to Reproduce:
1. Create a spec file using kernel_module_package (and kernel_source).
2. Build.
3. It will fail because of the missing directory.

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Actual results:
%{kernel_source $flavor} returns: /usr/src/kernels/3.7.0-0.36.el7-x86_64

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Expected results:
%{kernel_source $flavor} should return: /usr/src/kernels/3.7.0-0.36.el7.x86_64
(with a dot "." instead of a hyphen before the architecture.)