add configure option for szmul

simplify cx_array_copy() - fixes #474

major refactoring of attributes

let cxMapDestroy() ignore NULL as any free()-like function should do

instruct Doxygen to expand all macros

add -c flag to ARFLAGS to suppress diagnostic message on stderr

add script to invoke make check with different configurations

remove obsolete reference to previously removed cxPropertiesInput()

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mercurial