Brings hash table IDs feature from develop/1.12 (#768)

* Brings updated tid test from develop

* Adds empty H5Iint.c and H5Idbg.c files

* H5I renaming to match 1.12/develop

* Splits off H5I debug code to H5Idbg.c

* Splits internal H5I.c functionality to H5Iint.c

* Header cleanup

* More renaming cleanup to match develop/1.12

* Adds "save last ID" optimization

* Adds uthash.h

* Adds hash table IDs from develop/1.12

* Committing clang-format changes

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

MANIFEST

@@ -879,6 +879,8 @@
 ./src/H5HP.c
 ./src/H5HPprivate.h
 ./src/H5I.c
+./src/H5Idbg.c
+./src/H5Iint.c
 ./src/H5Imodule.h
 ./src/H5Ipkg.h
 ./src/H5Iprivate.h
@@ -1068,6 +1070,7 @@
 ./src/hdf5.h
 ./src/libhdf5.settings.in
 ./src/H5win32defs.h
+./src/uthash.h
 
 ./test/AtomicWriterReader.txt
 ./test/H5srcdir.h

src/CMakeLists.txt

@@ -372,6 +372,8 @@ IDE_GENERATED_PROPERTIES ("H5HP" "${H5HP_HDRS}" "${H5HP_SOURCES}" )
 
 set (H5I_SOURCES
     ${HDF5_SRC_DIR}/H5I.c
+    ${HDF5_SRC_DIR}/H5Idbg.c
+    ${HDF5_SRC_DIR}/H5Iint.c
     ${HDF5_SRC_DIR}/H5Itest.c
 )
 set (H5I_HDRS
@@ -904,6 +906,8 @@ set (H5_PRIVATE_HEADERS
     ${HDF5_SRC_DIR}/H5Zprivate.h
 
     ${HDF5_SRC_DIR}/H5win32defs.h
+
+    ${HDF5_SRC_DIR}/uthash.h
 )
 
 set (H5_GENERATED_HEADERS