Nightly test result of systemtap in ppc64

[Frank Ch. Eigler]

Hi -

Hien sent me the ppc64 C and assembly files for his test case.  The
problem is relatively typical for powerpc: TOC overflow.  In this
case, the ".toc1" section, used for storing addresses of string
literals and ordinary non-auto variables, runs out of space after 8k
of them.

We know we have plenty of work to do in improving the quality and
reducing the quantity of C code being generated.  In the mean time,
adding "-fminimal-toc" to the generated ppc64 Makefile CFLAGS should
solve this problem, at the cost of slower performance.

- FChE