8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero Summary: These options have been long disabled in Xmixed mode because they prevent these small methods from being inlined and are subject to bit rot, and we don't need more macro assembler code to maintain and change if the constant pool cache format changes. Reviewed-by: simonis, kvn

^build/
^dist/
^drop/
^drop_included/
^webrev/
/nbproject/private/
^.hgtip