PR modula2/116181 remove ODR warnings from library interface files

PR modula2/116181 remove ODR warnings from library interface files

This patch removes the warnings generated by -Wodr from the library
interface between modula-2 and C.

gcc/m2/ChangeLog:

	PR modula2/116181
	* Make-lang.in (MC_SRC_FLAGS): New macro.
	(m2/mc-boot/$(SRC_PREFIX)%.o): Use MC_SRC_FLAGS.
	(m2/mc-boot-ch/$(SRC_PREFIX)%.o): Ditto.
	(m2/gm2-libs-boot/M2RTS.o): Ditto.
	(m2/gm2-libs-boot/%.o): Ditto.
	(GM2-LIBS-BOOT-H): New macro.
	(m2/gm2-libs-boot/RTcodummy.o): Use MC_SRC_FLAGS.
	Remove gm2-libs-host.h from the dependancy.
	(m2/gm2-libs-boot/wrapc.o): Use MC_SRC_FLAGS.
	Add dependancy GM2-LIBS-BOOT-H.
	(m2/gm2-libs-boot/UnixArgs.o): Ditto.
	(m2/gm2-libs-boot/choosetemp.o): Ditto.
	(m2/gm2-libs-boot/errno.o): Ditto.
	(m2/gm2-libs-boot/dtoa.o): Ditto.
	(m2/gm2-libs-boot/ldtoa.o): Ditto.
	(m2/gm2-libs-boot/termios.o): Ditto.
	(m2/gm2-libs-boot/SysExceptions.o): Ditto.
	(m2/gm2-compiler-boot/M2GCCDeclare.o): Add gm2-libs-ch to the
	search path.
	(m2/gm2-compiler-boot/M2Error.o): Ditto.
	(m2/gm2-compiler-boot/%.o): Ditto.
	(m2/pge-boot/%.o): Ditto.
	* gm2-gcc/m2color.cc (m2color_colorize_start): Replace parameter
	type char to void and recast to char * when calling colorize_start.
	* gm2-gcc/m2color.h (m2color_colorize_start): Replace parameter
	type char to void.
	* gm2-gcc/m2type.h: Remove #if 0 block.
	* gm2-libs-ch/SysExceptions.c (DECL_PROC_T): Provide alternative
	defines for MC an gm2.
	(PROC_FUNC): Ditto.
	(EXTERN): Force undefine and redefine.
	(SysExceptions_InitExceptionHandlers): Rewrite function
	declaration using defined macros.
	(_M2_SysExceptions_init): Use EXTERN.
	(_M2_SysExceptions_finish): Replace with ...
	(_M2_SysExceptions_fini): ... this and add parameters.
	* gm2-libs-ch/UnixArgs.cc (gm2-libs-host.h): Include.
	(GUnixArgs.h): Include.
	(GM2RTS.h): Include.
	(UnixArgs_GetArgV): Change return type to void *.
	(UnixArgs_GetEnvV): Ditto.
	* gm2-libs-ch/m2rts.h (M2RTS_RegisterModule_Cstr): Add new
	conditional macro.
	(M2RTS_RequestDependant): Remove.
	(M2RTS_RegisterModule): Ditto.
	(M2RTS_Terminate): Ditto.
	(M2RTS_DeconstructModules): Ditto.
	(M2RTS_Halt): Ditto.
	(_M2_M2RTS_init): Ditto.
	(M2RTS_ConstructModules): Ditto.
	* gm2-libs-ch/termios.c (_termios_C): Define.
	(EXTERN): Add conditional definition.
	(doSetUnset): New function.
	(_M2_termios_init): Add correct parameters.
	(_M2_termios_finish): Ditto.
	(_M2_termios_fini): Ditto.
	* mc-boot-ch/GSysExceptions.c (DECL_PROC_T): New define.
	(PROC_FUNC): Ditto.
	(EXTERN): Force undef.
	(SysExceptions_InitExceptionHandlers): Rewrite.
	* mc-boot-ch/Glibc.c (libc_open): Rename parameter
	oflag to flags.
	* mc-boot-ch/Gtermios.cc (_termios_C): New define.
	(KillTermios): Change parameter type from
	struct termios * to termios_TERMIOS.
	(tcsnow): Rewrite.
	(tcsnow): Rewrite.
	(tcsdrain): Rewrite.
	(tcsflush): Rewrite.
	(cfgetospeed): Rewrite.
	(cfgetispeed): Rewrite.
	(cfsetospeed): Rewrite.
	(cfsetispeed): Rewrite.
	(cfsetspeed): Rewrite.
	(cfsetspeed): Rewrite.
	(tcgetattr): Rewrite.
	(tcsetattr): Rewrite.
	(cfmakeraw): Rewrite.
	(tcsendbreak): Rewrite.
	(tcdrain): Rewrite.
	(tcflushi): Rewrite.
	(tcflusho): Rewrite.
	(tcflushio): Rewrite.
	(tcflowoni): Rewrite.
	(tcflowoffi): Rewrite.
	(tcflowono): Rewrite.
	(tcflowoffo): Rewrite.
	(GetFlag): Rewrite.
	(SetFlag): Rewrite.
	(GetChar): Rewrite.
	(SetChar): Rewrite.
	(InitTermios): Rewrite.
	* pge-boot/GM2RTS.cc: Regenerate.
	* pge-boot/GSysExceptions.cc: Ditto.
	* pge-boot/Gtermios.cc: Ditto.
	* pge-boot/m2rts.h: Rewrite.
	* mc-boot-ch/GSYSTEM.h: New file.
	* mc-boot-ch/GSysExceptions.h: New file.
	* mc-boot-ch/Gtermios.h: New file.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>