Fix IA-64 breakage...

Fix IA-64 breakage; Make hot/cold optimization conversation port specific; Move
disabling of scheduling from OVERRIDE_OPTIONS to OPTIMIZATION_OPTIONS

Files modified:
gcc/doc/extend.texi
gcc/doc/tm.texi
gcc/target.h
gcc/ChangeLog
gcc/testsuite/gcc.target/i386/cmov8.c
gcc/testsuite/gcc.target/i386/funcspec-10.c
gcc/testsuite/gcc.target/i386/funcspec-11.c
gcc/testsuite/ChangeLog
gcc/target-def.h
gcc/c-common.c
gcc/config/i386/i386.c
gcc/config/ia64/ia64.c

From-SVN: r138154