* utils/hbmk2/hbmk2.prg
+ added ${HB_ADDONS} macro which will return the path
of the default addons dir, where 3rd party project might
deploy their distributable files (headers, libs, etc)
Note, the return value doesn't have an ending backslash,
so you need to add it if you need it.
* extras/hbusb/hbusb.hbp
+ added sample usage of full installation of this package,
utilizing ${HB_ADDONS} macro. This method can be used by
any 3rd party project.
* minor cleanup to force the implib name to a value
to avoid problems with double extension ("libusb-1.0")
* extras/hbusb/tests/hbmk.hbm
* since hbusb is installed now, the relative reference
to hbusb.hbc could be changed to simply 'hbusb.hbc' and
autofind will find it.
2e6654b24c