Allow meta-selinux to follow the jethro branch.

[stephensmalley]

commit 096a5ee ("Clone meta-selinux at known good rev.") switched meta-selinux to using a specific commit because at the time, meta-selinux had no jethro branch and changes in the master branch broke the build. Since that time, Phil created a jethro branch for meta-selinux, so we can switch back to letting meta-selinux default to following OE_BRANCH. In this manner, we ensure that any subsequent jethro-compatible fixes and improvements to meta-selinux will be picked up by future OpenXT builds.

Signed-off-by: Stephen Smalley sds@tycho.nsa.gov

[eric-ch]

+1!

[jean-edouard]

Merging soon.