Feature/more debug

[alexrayne]

with NDK_DEBUG == 2 provide printing debug messages by application-specifie printers coffeecatch_print[f]. This hepls when aplication override serial for own purposes.

Debug mode infer more trace messages.

provided ERROR( ) - for printing error messages, that seen even without NDK_DEBUG .

provided ASSERT( cond ) - prints with cspecified printers when asserted. helpful when application is captured stdio, so asserts not shows in console.