Merge commit 'origin/dwarfless' into pr6429-comp-unwindsyms
* commit 'origin/dwarfless':
The beginnings of a no-dwarf version of syscalls.stp. Selected
Added CPU REGISTERS and NUMBERED FUNCTION ARGUMENTS sections to
Replaced [u_]arg() with [u]int_arg(), [u]long_arg(), {s|u}32_arg(),
Added support for register(), u_register(), arg(), and u_arg() functions.
* testsuite/{semok,semko}/nodwf*.stp
PR 4311 - Function boundary tracing without debuginfo: Phase I