include config.h before bfd.h
libutil++: PR 14072 compatibility
opcontrol: fix isoc++11 compatibility
common: update for 4.8

Summary:
Updates the path for the 4.8 toolchain. Do not merge until we're using 4.8
Depends on D34
Depends on D35

Test Plan: Fuck test plans, this shit works

Reviewers: Mustaavalkosta, michyprima

Differential Revision: http://review.codefirex.com/D37

Conflicts:
	common.mk
common.mk: use TARGET_GCC_VERSION for toolchain path

Summary: The build repo target makefiles ensure this environment variable is always set by the time the oprofile common makefile is inherited. Same as my AOSP submission here: https://android-review.googlesource.com/#/c/61766

Test Plan: Tested that the header path was correctly used in a build. Nothing more to test, carry on

Reviewers: michyprima, randall.rushing, rlasalle15, Mustaavalkosta

Differential Revision: http://review.codefirex.com/D181