t-interix: Use mostly system headers unchanged.
* i386/t-interix: Use mostly system headers unchanged.
Use system assert.h
* fixinc/fixinc.interix: Ditto (make almost no-op).
* config/x-interix.h (_ALL_SOURCE): add -D
* config/x-interix.h (crti.o): Delete dependency.
* config/xm-interix.h (ONLY_INT_FIELDS): Define only when bootstrapping.
* i386/xm-i386-interix.h: New file.
* i386/interix.h (ASM_OUTPUT_LIMITED_STRING): Fix warnings.
* i386/i386-interix.h: Renamed from interix.h.
* configure.in (interix): Use new files.
* configure: Rebuilt.
From-SVN: r26332