More stabs removal.
gcc/
* config.gcc (cris-*-elf, cris-*-none): Remove dbxelf.h from
tm_file.
(m32r-*-elf, m32rle-*-elf, m32r-*-linux): Likewise.
(mn10300-*-*, am33_2.0-*-linux*): Likewise.
(xtensa*-*-elf, xtensa*-*-linux, xtensa*-*-uclinux): Likewise.
(m32c-*-elf*, m32c-*-rtems*): Likewise.
* config/cris/cris.h (DBX_NO_XREFS): Remove.
(DBX_CONTIN_LENGTH, DBX_CONTIN_CHAR): Likewise.
* config/m32r/m32r.h (DBXOUT_SOURCE_LINE): Likewise.
(DBX_DEBUGGING_INFO, DBX_CONTIN_LENGTH): Likewise.
* config/mn10300/mn10300.h (DEFAULT_GDB_EXTENSIONS): Likewise.
* config/mn10300/linux.h (DBX_REGISTER_NAMES): Likewise.