Fix elf/get-dynamic-info.h for AT
PowerPC: Add systemtap static probe points in setjmp/longjmp

This patch add static probes for setjmp/longjmp in the way gdb expects,fixing
the gdb.base/longjmp.exp gdb testcases.

It changes the symbol_name and use macros to to avoid change the probe names
and ending up adding more logic on GDB (since with the expected name
GDB work seamlessly).
Revert wrong commit.
Move TEST_f_f tests for [l-y]* functions from libm-test.inc to auto-libm-test-in.