Fix Valgrind memory errors

[leekillough]

This fixes some Valgrind errors, namely uninitialized data and memory leaks, but there are still "definite" leaks, some of which are caused by classes containing pointers being destroyed without deleting the pointers, even if it does not occur until program exit.

Some of the fixed errors are listed below.

==388622== Syscall param writev(vector[1]) points to uninitialised byte(s)
==388622==    at 0x576C06D: __writev (writev.c:26)
==388622==    by 0x576C06D: writev (writev.c:24)
==388622==    by 0x54A2C71: std::__basic_file<char>::xsputn_2(char const*, long, char const*, long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.32)
==388622==    by 0x54E732B: std::basic_filebuf<char, std::char_traits<char> >::xsputn(char const*, long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.32)
==388622==    by 0x55109A5: std::ostream::write(char const*, long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.32)
==388622==    by 0x45C466: SST::Simulation_impl::checkpoint(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (simulation.cc:1723)
==388622==    by 0x334B90: SST::CheckpointAction::createCheckpoint(SST::Simulation_impl*) (checkpointAction.cc:123)
==388622==    by 0x33530C: SST::CheckpointAction::execute() (checkpointAction.cc:72)
==388622==    by 0x457E57: SST::Simulation_impl::run() (simulation.cc:871)
==388622==    by 0x2D3D7D: start_simulation(unsigned int, SimThreadInfo_t&, SST::Core::ThreadSafe::Barrier&) (main.cc:596)
==388622==    by 0x2B1377: main (main.cc:1104)
==388622==  Address 0x97b17b2 is 98 bytes inside a block of size 16,912 alloc'd
==388622==    at 0x4859047: operator new(unsigned long) (vg_replace_malloc.c:472)
==388622==    by 0x2EC15C: allocate (new_allocator.h:137)
==388622==    by 0x2EC15C: allocate (alloc_traits.h:464)
==388622==    by 0x2EC15C: _M_allocate (stl_vector.h:378)
==388622==    by 0x2EC15C: std::__cxx1998::vector<char, std::allocator<char> >::_M_default_append(unsigned long) (vector.tcc:657)
==388622==    by 0x45C612: resize (stl_vector.h:1011)
==388622==    by 0x45C612: resize (vector:370)
==388622==    by 0x45C612: SST::Simulation_impl::checkpoint(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (simulation.cc:1716)
==388622==    by 0x334B90: SST::CheckpointAction::createCheckpoint(SST::Simulation_impl*) (checkpointAction.cc:123)
==388622==    by 0x33530C: SST::CheckpointAction::execute() (checkpointAction.cc:72)
==388622==    by 0x457E57: SST::Simulation_impl::run() (simulation.cc:871)
==388622==    by 0x2D3D7D: start_simulation(unsigned int, SimThreadInfo_t&, SST::Core::ThreadSafe::Barrier&) (main.cc:596)
==388622==    by 0x2B1377: main (main.cc:1104)
==388622==  Uninitialised value was created by a heap allocation
==388622==    at 0x4859047: operator new(unsigned long) (vg_replace_malloc.c:472)
==388622==    by 0x373873: SST::ConfigGraph::addComponent(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (configGraph.cc:784)
==388622==    by 0x59600E: addComponent (pymodel.h:94)
==388622==    by 0x59600E: compInit(ComponentPy_t*, _object*, _object*) (pymodel_comp.cc:95)
==388622==    by 0x4A7E431: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4A186C0: _PyObject_MakeTpCall (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x49ABBB6: _PyEval_EvalFrameDefault (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4C6E13B: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B069F4: PyEval_EvalCode (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B55E28: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B567E5: _PyRun_SimpleFileObject (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B56DBF: _PyRun_AnyFileObject (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B56E7C: PyRun_AnyFileExFlags (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==

==388622== 12 bytes in 4 blocks are definitely lost in loss record 391 of 2,169
==388622==    at 0x48588A1: malloc (vg_replace_malloc.c:431)
==388622==    by 0x570078D: strdup (strdup.c:42)
==388622==    by 0x595FDA: compInit(ComponentPy_t*, _object*, _object*) (pymodel_comp.cc:94)
==388622==    by 0x4A7E431: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4A186C0: _PyObject_MakeTpCall (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x49ABBB6: _PyEval_EvalFrameDefault (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4C6E13B: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B069F4: PyEval_EvalCode (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B55E28: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B567E5: _PyRun_SimpleFileObject (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B56DBF: _PyRun_AnyFileObject (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==    by 0x4B56E7C: PyRun_AnyFileExFlags (in /usr/lib/x86_64-linux-gnu/libpython3.11.so.1.0)
==388622==

[github-actions]

CLANG-FORMAT TEST - FAILED (on last commit):
Run > ./scripts/clang-format-test.sh using clang-format v12 to check formatting

[github-actions]

CMAKE-FORMAT TEST - PASSED

[sst-autotester]

Status Flag 'Pre-Test Inspection' - - This Pull Request Requires Inspection... The code must be inspected by a member of the Team before Testing/Merging
NO INSPECTION HAS BEEN PERFORMED ON THIS PULL REQUEST! - This PR must be inspected by setting label 'AT: PRE-TEST INSPECTED'.

[github-actions]

CLANG-FORMAT TEST - FAILED (on last commit):
Run > ./scripts/clang-format-test.sh using clang-format v12 to check formatting

[github-actions]

CMAKE-FORMAT TEST - PASSED

[sst-autotester]

Status Flag 'Pre-Test Inspection' - - This Pull Request Requires Inspection... The code must be inspected by a member of the Team before Testing/Merging
NO INSPECTION HAS BEEN PERFORMED ON THIS PULL REQUEST! - This PR must be inspected by setting label 'AT: PRE-TEST INSPECTED'.