Correct GMRES: * Fix error in calculation of residual at restart. * Use relative residual as stopping criterion. * Improve documentation.
Correct GMRES:
* Fix error in calculation of residual at restart.
* Use relative residual as stopping criterion.
* Improve documentation.

ROCmSoftwarePlatform/hipeigen,pasuka/eigen,Zefz/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,TSC21/Eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,toastedcrumpets/eigen,pasuka/eigen,toastedcrumpets/eigen,Zefz/eigen,pasuka/eigen,Zefz/eigen,toastedcrumpets/eigen,Zefz/eigen,ritsu1228/eigen,pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen,TSC21/Eigen,toastedcrumpets/eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen