[Xtensa] make ld preserve .org placement

[Bob Wilson]

The Xtensa port of ld does link-time relaxations that can change the  
position of code that was specified with a .org directive.  This  
patch fixes the problem by marking the contents of a section prior to  
the .org directive so that it won't be transformed by the linker.   
Most of this change is just renaming the "NO_TRANSFORM" flag, since  
it used to apply only to instructions but is now more general.   
Tested with an xtensa-elf build and committed.

2007-06-11  Sterling Augustine  <sterling@tensilica.com>
             Bob Wilson  <bob.wilson@acm.org>

bfd/
         * elf32-xtensa.c (extend_ebb_bounds_forward): Use renamed
         XTENSA_PROP_NO_TRANSFORM flag instead of  
XTENSA_PROP_INSN_NO_TRANSFORM.
         (extend_ebb_bounds_backward, compute_text_actions): Likewise.
         (compute_ebb_proposed_actions, coalesce_shared_literal):  
Likewise.
         (xtensa_get_property_predef_flags): Likewise.
         (compute_removed_literals): Pass new arguments to  
is_removable_literal.
         (is_removable_literal): Add sec, prop_table and ptblsize  
arguments.
         Do not remove literal if the NO_TRANSFORM property flag is set.
gas/
         * config/tc-xtensa.c (XTENSA_PROP_INSN_NO_TRANSFORM):  
Renamed to...
         (XTENSA_PROP_NO_TRANSFORM): ...this.
         (frag_flags_struct): Move is_no_transform out of the insn  
sub-struct.
         (xtensa_mark_frags_for_org): New.
         (xtensa_handle_align): Set RELAX_ORG frag subtype for rs_org.
         (xtensa_post_relax_hook): Call xtensa_mark_frags_for_org.
         (get_frag_property_flags): Adjust reference to  
is_no_transform flag.
         (xtensa_frag_flags_combinable): Likewise.
         (frag_flags_to_number): Likewise.  Use  
XTENSA_PROP_NO_TRANSFORM.
         * config/tc-xtensa.h (xtensa_relax_statesE): Add RELAX_ORG.
include/elf/
         * xtensa.h (XTENSA_PROP_INSN_NO_TRANSFORM): Renamed to...
         (XTENSA_PROP_NO_TRANSFORM): ...this.
ld/
         * emultempl/xtensaelf.em (replace_insn_sec_with_prop_sec):  
Use renamed
         XTENSA_PROP_NO_TRANSFORM flag instead of  
XTENSA_PROP_INSN_NO_TRANSFORM.

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