Add some abilities to base symrec so that it can be more effectively used by

Add some abilities to base symrec so that it can be more effectively used by
object formats without creating duplicate lists of symbols.  XDF and COFF
were updated; ELF needs to reorder the symbols on its own, so for now it's
not been updated to use the common implementation.

* hamt.c (HAMTEntry, HAMT, HAMT_destroy)
(HAMT_insert): Change SLIST to STAILQ.

* symrec.c (sym_type): Add SYM_SPECIAL.
(yasm_symtab_define_special): New.
(yasm_symrec_declare): New; includes all functionality from symtab_declare.
(yasm_symtab_declare): Call yasm_symrec_declare now.
(yasm_symrec_is_special): New.
* symrec.h: Add prototypes for above.

* xdf-objfmt.c: Use symrec_data instead of declaring xdf_symtab.
* xdflong.hex, xdfprotect.hex, xdfother.hex: Update due to symbol reordering.

* coff-objfmt.c: Use symrec_data instead of declaring coff_symtab.

* elftimes.hex, elfso.hex, elfabssect.hex: Update due to symbol reordering.
* elfglobext.hex, elf-x86id.hex, elftest.hex, elfso64.hex: Likewise.
* stabs-elf.hex: Likewise.

svn path=/trunk/yasm/; revision=1188