set valgrind options correctly

this avoid an ugly valgrind error after executing long sequences
of simd code

see: https://www.bountysource.com/issues/41603953-temporary-storage-exhausted-when-long-sequence-of-vfmadd231ps-instructions-to-be-executed

CMakeLists.txt

@@ -41,8 +41,6 @@ include(SRSLTEVersion) #sets version information
 include(SRSLTEPackage) #setup cpack
 
 include(CTest)
-set(CTEST_MEMORYCHECK_COMMAND valgrind)
-set(CTEST_MEMORYCHECK_COMMAND_OPTIONS "--trace-children=yes --leak-check=full" )
 
 configure_file(
     "${CMAKE_CURRENT_SOURCE_DIR}/CTestCustom.cmake.in"

CTestConfig.cmake

@@ -11,3 +11,4 @@ set(CTEST_DROP_METHOD "http")
 set(CTEST_DROP_SITE "my.cdash.org")
 set(CTEST_DROP_LOCATION "/submit.php?project=srsLTE")
 set(CTEST_DROP_SITE_CDASH TRUE)
+set(VALGRIND_COMMAND_OPTIONS "--trace-children=yes --leak-check=full --show-reachable=yes --vex-guest-max-insns=25")