Function proxy

tests/TestClosures.cpp:66–68

\r\n\
int global = 100;\r\n\
int test(int a, int c){ return global + a * c; }\r\n\
\r\n\
int proxy(int a, int c, typeof(test) foo){ return foo(a, c); }\r\n\
\r\n\
auto fp = test;\r\n\
int res1a, res1b, res1c, res1d;\r\n\