The attached patch adds the following to the generic-build-script:
* automatically determines the correct decompression option for tar
from the original source tarball
* 'mkdirs' removes the .build, .inst, and .sinst directories, to
increase the likelihood that 'mkpatch' will generate a 'clean' patch
(i.e. no extraneous files.)
* added COPYING to the list of files copied to the binary package by
the 'install' option
* 'strip' option avoids returning an error if no DLLs or EXEs are found
to contain symbolic debugging information