Add -lX11 and -lssl for linking with PETSc (#2)

I hacked and added -lX11 and -lssl to xSDKTrilinos_EXTRA_LINK_FLAGS since
PETSc (or one of the packages that PETSc is building) is finding and linking
against these libraries on the ORNL CASL Fissile4 machines.

NOTE: This is not really a hack since this script is specific to the Fissile4
machines anyway.

scripts/do-configure-fissile4

@@ -82,6 +82,7 @@ DRIVERS_BASE_DIR=$TRILINOS_DIR_ABS/cmake/ctest/drivers/fissile4
 
 cmake \
 -D xSDKTrilinos_CONFIGURE_OPTIONS_FILE="$DRIVERS_BASE_DIR/gcc-4.8.3-base-options.cmake,$DRIVERS_BASE_DIR/trilinos-tpls-gcc.4.8.3.cmake" \
+-D xSDKTrilinos_EXTRA_LINK_FLAGS="-lX11 -lssl -lgomp -Wl,-rpath,/projects/vera/gcc-4.8.3/toolset/gcc-4.8.3/lib64" \
 -D TPL_ENABLE_MPI=ON \
 -D CMAKE_BUILD_TYPE=DEBUG \
 -D xSDKTrilinos_ENABLE_TESTS=ON \