re PR libgcj/9652 (libjava bootstrap failure on irix6.5.1[78])
* config/mips/iris6.h (TARGET_OS_CPP_BUILTINS): Define __c99 for
ISO C99 and C++.
* fixinc/inclhack.def (irix___restrict): Don't change __restrict
for C++ on IRIX 6.5.1[89].
* fixinc/tests/base/internal/sgimacros.h: New file.
* fixinc/inclhack.def (irix_wcsftime): Use XPG5 variant for C99.
* fixinc/tests/base/internal/wchar_core.h: New file.
* fixinc/inclhack.def (irix_socklen_t): Fix broken IRIX 6.5.1[78]
socklen_t definition.
* fixinc/fixincl.x: Regenerate.
* fixinc/tests/base/sys/socket.h: New file.
Fixes PR libgcj/9652.
From-SVN: r63123