SystemTap 1.2 released

"= Systemtap frontend (stap) changes

"- Tapset-related man pages have been renamed. 'man -k 3stap' should show the installed list, which due to prefixing should no longer collide over ordinary system functions.

"- User space marker arguments no longer use volatile if the version of gcc, which must be at least 4.5.0, supports richer DWARF debuginfo. Use cflags -DSTAP_SDT_VOLATILE=volatile or -DSTAP_SDT_VOLATILE= when building the sys/sdt.h application to override this either way.

"- A new command line flag '-W' forces systemtap to abort translation of a script if any warnings are produced. It is similar to gcc's -Werror. (If '-w' is also supplied to suppress warnings, it wins.)"

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