PR 1056: Merge merge_release_v0.6.1_ to development
PR 1056: Merge merge_release_v0.6.1_ to development

 - Updated GCC version
 - PR 1042: Updated GCC version
 - fix merge conflicts

IntelRealSense/realsense_sdk,IntelRealSense/realsense_sdk,IntelRealSense/realsense_sdk