[Bug lto/48108] lto should be containerized in a single mach-o section on darwin

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48108

--- Comment #1 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-03-14 
03:10:24 UTC ---
Note that LTO was disabled for gcc 4.6.0 due to the inability of end-users to
obtain an appropriate Xcode 3.2.5 now that the broken Xcode 3.2.6/4.0 have been
released.