debugability: macro metaprogramming: vararg counter returns 0 when token start with parenthesis #542

Following macros:

1. META_COUNT_VARAGS_BEFORE_COMPILE()
2. META_COUNT_VARAGS_BEFORE_COMPILE(A)
3. META_COUNT_VARAGS_BEFORE_COMPILE(1,2,3)
4. META_COUNT_VARAGS_BEFORE_COMPILE((1+2)<<2)
5. META_COUNT_VARAGS_BEFORE_COMPILE(2*(1+2))

should expand to:

1. 0
2. 1
3. 3
4. 1
5. 1

but currently they expand to:

1. 0
2. 1
3. 3
4. 0
5. 1

This, combined with _TRACE_EVENT_NTH in BASE_LOG in trace.h will break FW during any calls to _trace_event(..., (x+y)<<z , ...) in runtime (so no compiler warnings).