Pass CMake compilers to InstallPetsc.cmake

- pass compilers and their flags to Petsc configure
- introduce PETSC_CONFIG option instead of INSTALL_PETSC_*
- simplify passing parammeters to the configure script using bash wrapper
  (dammed CMake quotting)
- update config/config-jenkins-*
- update config.cmake.template (add some missing info)
Add release builds to Jenkins.

- add two more multijob chains to build release on both linux and windows
  without packaging yet