Eigen/CMakeLists.txt: remove parens from if. Only CMake 2.6.3 and later recognize this syntax, and at the moment we require 2.6.2. CMake uses the right precendence, per its man page, so the parentheses are not necessary.
Eigen/CMakeLists.txt: remove parens from if.
Only CMake 2.6.3 and later recognize this syntax, and at the moment we
require 2.6.2. CMake uses the right precendence, per its man page, so the
parentheses are not necessary.

robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen