All, I have created a distribution branch 'linaro/gcc-4_9-branch'. This branch is already documented on http://gcc.gnu.org/svn.html
for the recall : The branch will track the equivalent FSF release branch and also accept backports of patches accepted for trunk which are of interest to the ARM and AArch64 backends. Anyone from Linaro with write access to the GCC Subversion repository can commit and approve patches for this branch. Thanks, Yvan