C Instrumentation Framework

At the moment Aspectator creates an auxiliary function for each matched join point. Often is is redundant since corresponding generated code is absolutely the same.

You should note that this issue is weakly related with #6486. There it is suggested to get rid of simple auxiliary functions that is quite hard to implement by the way. Here it is suggested to get rid of auxiliary function duplicates.

In addition, I expect that there will be no more numbers at the end of auxiliary function names and auxiliary functions will be always static. This will help to avoid nondeterminism in auxiliary function names and function collisions (sometimes there may be [different!] auxiliary functions with the same names in different source files merged together).