[CMSSW_7_0_X][48] Fix armv7hl gcc and binutils; update bootstrap-driver

- Add fix for PR gas/14987 [binutils]
- Add fix for PR gas/14887 [binutils]
- Add fix for PR middle-end/57748 [gcc] // not yet merged to gcc trunk, just pinged gcc-patches.
- Add fix for PR target/58065 [gcc]
- Add missing bootstrap-driver prerequisites needed for GIT and Dell servers