fix wavpack.pc.in to work correctly with Arch Linux without special parameters to the configure script
fix some warnings in the command-line programs
add man directory artifacts to repository to reduce build problems (we just need to remember to update these when we update the xml source files
add doc directory to distribution tarball (used to add this manually but forgot for 4.70; now I will not have to remember)
update ChangeLog with DirectShow filter update
complete reorganization and cleanup of the WavPack library source code - increased the "C" module count from 11 to 21 - eliminated the NO_PACK, NO_UNPACK, and INFO_ONLY macros (the linked library size should now be reduced automatically at the module level based on functions referenced) - added and updated some module-level documentation - as far as I know, this should not include any actual code changes - this will probably make bit of a mess of the Git history, but should be cleaner going forward
update README to reflect changes in library source
more changes to README resulting from reorganization
Visual Studio changes required for library reorganization