package_rpm: Fix a race with package_deb/package_ipk
We have the odd situation where the CONTROL/DEBIAN directory can be removed
in the middle of the walk, the isdir() test would then fail and the walk code
would assume its a file hence we check for the names in files too.
This resolves the autobuilder failure:
error: File not found: /home/pokybuild/yocto-autobuilder/yocto-slave/nightly-fsl-arm/build/build/tmp/work/armv7a-vfp-neon-poky-linux-gnueabi/xinit/1_1.3.3-r0/package/DEBIAN
RPM build errors:
File not found: /home/pokybuild/yocto-autobuilder/yocto-slave/nightly-fsl-arm/build/build/tmp/work/armv7a-vfp-neon-poky-linux-gnueabi/xinit/1_1.3.3-r0/package/DEBIAN
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
