15604 gprof: clean up warning gags
Reviewed by: Andy Fiddaman <illumos@fiddaman.net>
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Approved by: Dan McDonald <danmcd@mnx.io>

13619 sgs: variable may be used uninitialized
Reviewed by: Rich Lowe <richlowe@richlowe.net>
Reviewed by: Andy Fiddaman <andy@omnios.org>
Approved by: Dan McDonald <danmcd@joyent.com>

PSARC 2007/074 -L option for nm(1) to display SHT_SUNW_LDYNSYM symbols
6518322 Some ELF utilities need updating for .SUNW_ldynsym section

6273860 gcc and sgs/gprof don't get along
6273866 gcc and sgs/prof don't get along

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