Rationalize some of the variable names in Solver::Options.

lm_max_diagonal -> max_lm_diagonal
lm_min_diagonal -> min_lm_diagonal
linear_solver_max_num_iterations -> max_linear_solver_iterations
linear_solver_min_num_iterations -> min_linear_solver_iterations

This follows the pattern for the other parameters in Solver::Options
where, the max/min is the first word followed by the name of the
parameter.

Change-Id: I0893610fceb6b7983fdb458a65522ba7079596a7
diff --git a/internal/ceres/solver_impl_test.cc b/internal/ceres/solver_impl_test.cc
index 7413ca8..d81858c 100644
--- a/internal/ceres/solver_impl_test.cc
+++ b/internal/ceres/solver_impl_test.cc
@@ -509,7 +509,7 @@
 TEST(SolverImpl, CreateLinearSolverNegativeMaxNumIterations) {
   Solver::Options options;
   options.linear_solver_type = DENSE_QR;
-  options.linear_solver_max_num_iterations = -1;
+  options.max_linear_solver_iterations = -1;
   // CreateLinearSolver assumes a non-empty ordering.
   options.linear_solver_ordering = new ParameterBlockOrdering;
   string error;
@@ -520,7 +520,7 @@
 TEST(SolverImpl, CreateLinearSolverNegativeMinNumIterations) {
   Solver::Options options;
   options.linear_solver_type = DENSE_QR;
-  options.linear_solver_min_num_iterations = -1;
+  options.min_linear_solver_iterations = -1;
   // CreateLinearSolver assumes a non-empty ordering.
   options.linear_solver_ordering = new ParameterBlockOrdering;
   string error;
@@ -531,8 +531,8 @@
 TEST(SolverImpl, CreateLinearSolverMaxLessThanMinIterations) {
   Solver::Options options;
   options.linear_solver_type = DENSE_QR;
-  options.linear_solver_min_num_iterations = 10;
-  options.linear_solver_max_num_iterations = 5;
+  options.min_linear_solver_iterations = 10;
+  options.max_linear_solver_iterations = 5;
   options.linear_solver_ordering = new ParameterBlockOrdering;
   string error;
   EXPECT_EQ(SolverImpl::CreateLinearSolver(&options, &error),