* emulparams/mipsidt.sh (TEMPLATE_NAME): Set to mipsecoff.
* emulparams/mipsidtl.sh (TEMPLATE_NAME): Likewise.
* scripttempl/mips.sc: Put .rel.sdata sections in .text, and
provide __runtime_reloc_start and __runtime_reloc_stop if they are
used. Align _fdata to a 16 byte boundary.
* Makefile.in (emipsidt.c): Depend upon mipsecoff.em rather than
generic.em.
(emipsidtl.c): Likewise.
(check): Pass CC_FOR_HOST and CFLAGS_FOR_HOST to runtest.
