b52aba3fc2
Always build crt1.o, dllcrt1.o, crt2.o and dllcrt2.o. Create a libcoldname.a for the oldname library for CRTDLL. Restrict libmoldname.a for the oldname library for MSVCRT. * configure.in: eliminate setting RUNTIME and CRT_ID variables. Restructure the $target_os case logic. Always name the MinGW thread dll helper mingwm. Change Cygwin's HEADER_SUBDIR value from mingw32 to mingw. * configure: regenerate.