* emulparams/i386pe.sh: Define ENTRY, SUBSYSTEM, and
INITIAL_SYMBOL_CHAQR.
* emulparams/i386pe_posix.sh: New file.
* Makefile.am (YACC): If bison is not in the source tree, use
@YACC@ rather than bison -y.
(LEX): If flex is not in the source tree, use @LEX@ rather than
flex.
(ALL_EMULATIONS): Add ei386pe_posix.o.
(ei386pe_posix.c): New target.
* configure.tgt (i[3456]86-*-interix*): New target.
* configure.host (i[3456]86-pc-interix*): New host.
* Makefile.in: Rebuild.
