This fixes the stack overflow error during the basic USB tests.
Update the ctrl_buf member of the USBTester and USBEndpointTester test
classes to be allocated on the heap. This saves 2 KB of a main stack.
Remove the endpoint parameter from endpoint callbacks. This
information is redundant because endpoints are known at
construction time because they must be in the configuration
descriptor.
Fix the following warnings:
-[Warning] USBTester.cpp@45,0: #1299-D: members and base-classes will
be initialized in declaration order, not in member initialisation
list order
-[Warning] USBTester.h@41,0: #1300-D: ~USBTester inherits implicit
virtual
-[Warning] USBAudio.cpp@345,0: #1035-D: single-precision operand
implicitly converted to double-precision
-[Warning] USBHID.cpp@29,0: #1300-D: ~AsyncSend inherits implicit
virtual
-[Warning] USBHID.cpp@61,0: #1300-D: ~AsyncRead inherits implicit
virtual
-[Warning] USBHID.cpp@93,0: #1300-D: ~AsyncWait inherits implicit
virtual
-[Warning] EndpointResolver.cpp@125,26: '<<' in boolean context, did
you mean '<' ? [-Wint-in-bool-context]