Update build config to build SolverUtils by default when not building solvers - Fixes #259

Merged Jeremy Cohen requested to merge fix/solverutils-without-solvers into master

This update modifies the build system to build the SolverUtils library by default as one of the core Nektar++ libraries when NEKTAR_BUILD_LIBRARY=ON.

Fixes issue #259 (closed).

Edited by Jeremy Cohen

Merge request reports