[Bug target/47269] DSYMUTIL_SPEC doesn't handle -gtoggle

[mikestump at comcast dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269

--- Comment #2 from Mike Stump <mikestump at comcast dot net> 2011-02-06 01:10:06 UTC ---
Luckily specs can do this:

  %{!fdump=*:%{!fsyntax-only:foo}}

says to put in foo, if those two flags are not given; this is and.