Fixed issue with MAC address verification

- Removed errant ':' systems from the last two octet matches
- Added checks that the string does not start or end with extra characters
Merge pull request #409 from ahamilton55/fix_mac_address_verification

Fixed issue with MAC address verification
distro_signatures: add SLES11-SP3

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
newtests/suse_import_test: add SLES11-SP3 information

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Fixing a few goofs from ac5de466
Merge branch 'master' of git://github.com/cobbler/cobbler
Refactor function cobbler.utils.is_mac

Use a precompiled and faster regular expression and add more tests.
timeit with 64M iterations: 48.32 versus 42.38 seconds.
Merge pull request #412 from ciupicri/master-mac-regex

Refactor function cobbler.utils.is_mac
Speedup function cobbler.utils.is_mac

Use both lower case and upper case hexadecimal digits in the regex
instead of using the re.IGNORECASE option. Also add more tests.
timeit with 64M iterations: 42.78 versus 39.74 seconds.
Merge pull request #413 from ciupicri/master-mac-regex

Speedup function cobbler.utils.is_mac
FEATURE - adding the ability to rename interfaces on the CLI
FEATURE - adding interface rename to the web ui
Merge pull request #416 from jimi1283/issue_415

Adding interface renaming
Fixing utils, CX exceptions should be raised, not returned
Commenting out deprecated langsupport option in pxerescue.ks
Merge pull request #417 from jimi1283/deprecate_langsupport

Commenting out deprecated langsupport option in pxerescue.ks
Adding field tests to xmlrpc items
* Needs more, currently only distros/profiles/systems
Merge branch 'master' of git://github.com/cobbler/cobbler
BUGFIX - issue #267 koan not setting --location correctly
Add --import argument to koan to mirror virt-install behaviour.

This allows a user to use koan to recreate a vm .xml file and skip the
os installation process, similarly to how virt-install does, but using
the information already stored inside the cobbler database of course!
Remember to add --force-path to koan if the path already exists!