[YOCTO #1306] Fixing.
Added and unified version related variables in all environment files
generated by package meta-toolchain, meta-ide-support,
meta-environment-xxx.
(From OE-Core rev: 5fbea0f2614d5bc9aec0819a337cdec9b5331f71)
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>