add WITH_MKSTEMP macro because the previous feature test did not always work

add ubsan feature (for debugging)

make find_remove tests robust against possible duplicates in the random test data

revert incorrect use of elem_size argument in cxArrayListCreate()

improve code in cxArrayListCreate()

add overflow check to cx_array_insert()

optimize test whether elements need to be moved in cx_array_insert()

adds cx_bstr() and cx_bstr_m()

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mercurial