Much normalization with develop (#701)

* Brings CMake updates from develop

* Brings reduction in pedantic casts from develop

* Purges UFAIL from the library (#637)

* Committing clang-format changes

* Purges UFAIL from the library

* H5HL_insert change requested in PR

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

* Removes gratuitous (double)x.yF casts (#632)

* Committing clang-format changes

* Removes gratuitous (double)x.yF casts

* Committing clang-format changes

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

* Committing clang-format changes

* Cleans up a const warning left over from previous constification (#633)

* Committing clang-format changes

* Adds consts to a few global variables

* Cleans up a const warning left over from previous constification

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

* Formatted source

* Bring over some VOL registration changes

* VOL cleanup

* H5VL_request_status_t substitutions

* H5F.c cleanup

* Minor API tweaks from develop

* Moves H5G package init/teardown to H5Gint.c

* H5G cleanup

* H5M cleanup

* H5SM cleanup

* H5T cleanup

* H5R cleanup

* H5Lpublic.h cleanup

* H5L cleanup

* H5O cleanup

* H5A, H5CS, and H5AC cleanup

* Moved H5A init/teardown code to H5Aint.c

* Moves H5D I/O functions to H5D.c

* H5D cleanup

* Misc minor cleanup

* H5P close cleanup

* H5Tpublic.h cleanup

* Fixes err_compat test

* H5PLpublic.h cleanup

* Updates H5Ppublic.h

* H5Fpublic.h updates

* H5A.c cleanup

* Brings over H5Aexists and related changes

* Brings CMake shell testing changes from develop

* Close callback changes

* H5R and H5Tcommit normalization

* err_compat test works now

* H5O tweaks

* Updates VOL registration code

* Brings over H5VL_create_object

* H5Tconv.c reformatting

* H5T.c tweaks

* Brings datatype and reference updates from develop

* Brings VOL plugin loading changes from develop

* Brings event sets from develop

* Brings async functions over

* Tools changes

* Brings over many tools changes from develop

* Brings VOL flags from develop

* Fixes h5dump double/float tests

* Updates h5repack tests

* Brings h5diff test changes from develop

* Last h5dump changes

* Brings test changes from develop

* Committing clang-format changes

* Tidied h5_testing()

* Brings chunk iteration code + misc from develop

* Updates vds test

* Enables external link parallel test

* Brings updated property lists from develop

* H5G changes from develop

* H5MF cleanup

* Brings vfd_swmr test back into CMake

* Updates threadsafe test

* Updates plist test

* Brings recent changes from develop

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

tools/test/h5repack/testfiles/h5repack-help.txt

@@ -29,6 +29,9 @@ usage: h5repack [OPTIONS] file1 file2
    --high=BOUND            The high bound for library release versions to use
                            when creating objects in the file
                            (default is H5F_LIBVER_LATEST)
+   --merge                 Follow external soft link recursively and merge data
+   --prune                 Do not follow external soft links and remove link
+   --merge --prune         Follow external link, merge data and remove dangling link
    -c L1, --compact=L1     Maximum number of links in header messages
    -d L2, --indexed=L2     Minimum number of links in the indexed format
    -s S[:F], --ssize=S[:F] Shared object header message minimum size
@@ -133,6 +136,7 @@ usage: h5repack [OPTIONS] file1 file2
         UD=<filter_number,filter_flag,cd_value_count,value1[,value2,...,valueN]>
             Required values: filter_number, filter_flag, cd_value_count, value1
             Optional values: value2 to valueN
+            filter_flag: 1 is OPTIONAL or 0 is MANDATORY
         NONE (no parameter)
 
     LAYT - is a string with the format: