build broken as '-lusb-1.0' is missing...

[Cristian Ionescu-Idbohrn]

...from the generated Makefile (on the master branch).

If I manually add it:

	... -ldivecomputer -lusb-1.0 -lxslt -lxml2 ...
	                   ^^^^^^^^^
at a strategic point, on line 21:

	LIBS          = $(SUBLIBS) ...

I get a ./subsurface executable.


Cheers,

-- 
Cristian