Rlease GCC ARM Embedded 4.7 update 2

Written for GNU Arm Embedded Toolchain by Terry Guo on 2013-06-28

4.7 2013q2 (update 2) is released at https://launchpad.net/gcc-arm-embedded/+milestone/4.7-2013-q2-update and https://launchpad.net/~terry.guo/+archive/gcc-arm-embedded

Important bugs fixed in 4.7 update 2013q2 release:
* Upgrade doc/*.texi to the latest texinfo package
  https://answers.launchpad.net/gcc-arm-embedded/+question/227685
* Fix ICE with -mtune option
  https://answers.launchpad.net/gcc-arm-embedded/+question/227667
* Fix --debug option in build script
  https://answers.launchpad.net/gcc-arm-embedded/+question/229127
* Fix unnecessary lr save in thumb1 leaf function

Recommended to update your 4.7 release with this version.

Updated on 2013-06-28.