Bumping version to 2.27.90

Bumping version to 2.27.90

bfd/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* version.m4: Bump version to 2.27.90
	* configure: Regenerate.

binutils/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* configure: Regenerate.

gas/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* configure: Regenerate.

gprof/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* configure: Regenerate.

ld/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* configure: Regenerate.

opcodes/
2016-12-23  Tristan Gingold  <gingold@adacore.com>

	* configure: Regenerate.