Avoid using a specific value for ulimit

Author: weslleyspereira

.travis.yml

@@ -41,15 +41,11 @@ script:
     -DLAPACKE_WITH_TMG:BOOL=ON
     -DCMAKE_Fortran_FLAGS:STRING="-frecursive -fimplicit-none"
     ${SRC_DIR}
-  - ulimit -s 16384
+  - ulimit -s unlimited
   - ctest -D ExperimentalStart
-  - ulimit -s 16384
   - ctest -D ExperimentalConfigure
-  - ulimit -s 16384
   - ctest -D ExperimentalBuild -j2
-  - ulimit -s 16384
   - ctest -D ExperimentalTest --schedule-random -j2 --output-on-failure --timeout 100
-  - ulimit -s 16384
   - ctest -D ExperimentalSubmit
   - make install -j2
   - if [[ "$CMAKE_BUILD_TYPE" == "Coverage" ]];