Fix modula-2 rename autogenerated .c files to .cc

This patch adds the replacement .cc files for the
autogenerated tools.

gcc/m2/ChangeLog:

	* mc-boot-ch/GBuiltins.cc: New file.
	* mc-boot-ch/Gdtoa.cc: New file.
	* mc-boot-ch/Gerrno.cc: New file.
	* mc-boot-ch/Gldtoa.cc: New file.
	* mc-boot-ch/Gm2rtsdummy.cc: New file.
	* mc-boot/GASCII.cc: New file.
	* mc-boot/GArgs.cc: New file.
	* mc-boot/GAssertion.cc: New file.
	* mc-boot/GBreak.cc: New file.
	* mc-boot/GCmdArgs.cc: New file.
	* mc-boot/GDebug.cc: New file.
	* mc-boot/GDynamicStrings.cc: New file.
	* mc-boot/GEnvironment.cc: New file.
	* mc-boot/GFIO.cc: New file.
	* mc-boot/GFormatStrings.cc: New file.
	* mc-boot/GFpuIO.cc: New file.
	* mc-boot/GIO.cc: New file.
	* mc-boot/GIndexing.cc: New file.
	* mc-boot/GM2Dependent.cc: New file.
	* mc-boot/GM2EXCEPTION.cc: New file.
	* mc-boot/GM2RTS.cc: New file.
	* mc-boot/GMemUtils.cc: New file.
	* mc-boot/GNumberIO.cc: New file.
	* mc-boot/GPushBackInput.cc: New file.
	* mc-boot/GRTExceptions.cc: New file.
	* mc-boot/GRTint.cc: New file.
	* mc-boot/GSArgs.cc: New file.
	* mc-boot/GSFIO.cc: New file.
	* mc-boot/GStdIO.cc: New file.
	* mc-boot/GStorage.cc: New file.
	* mc-boot/GStrCase.cc: New file.
	* mc-boot/GStrIO.cc: New file.
	* mc-boot/GStrLib.cc: New file.
	* mc-boot/GStringConvert.cc: New file.
	* mc-boot/GSysStorage.cc: New file.
	* mc-boot/GTimeString.cc: New file.
	* mc-boot/Galists.cc: New file.
	* mc-boot/Gdecl.cc: New file.
	* mc-boot/Gkeyc.cc: New file.
	* mc-boot/Glists.cc: New file.
	* mc-boot/GmcComment.cc: New file.
	* mc-boot/GmcComp.cc: New file.
	* mc-boot/GmcDebug.cc: New file.
	* mc-boot/GmcError.cc: New file.
	* mc-boot/GmcFileName.cc: New file.
	* mc-boot/GmcLexBuf.cc: New file.
	* mc-boot/GmcMetaError.cc: New file.
	* mc-boot/GmcOptions.cc: New file.
	* mc-boot/GmcPreprocess.cc: New file.
	* mc-boot/GmcPretty.cc: New file.
	* mc-boot/GmcPrintf.cc: New file.
	* mc-boot/GmcQuiet.cc: New file.
	* mc-boot/GmcReserved.cc: New file.
	* mc-boot/GmcSearch.cc: New file.
	* mc-boot/GmcStack.cc: New file.
	* mc-boot/GmcStream.cc: New file.
	* mc-boot/Gmcp1.cc: New file.
	* mc-boot/Gmcp2.cc: New file.
	* mc-boot/Gmcp3.cc: New file.
	* mc-boot/Gmcp4.cc: New file.
	* mc-boot/Gmcp5.cc: New file.
	* mc-boot/GnameKey.cc: New file.
	* mc-boot/GsymbolKey.cc: New file.
	* mc-boot/Gtop.cc: New file.
	* mc-boot/Gvarargs.cc: New file.
	* mc-boot/Gwlists.cc: New file.
	* pge-boot/GASCII.cc: New file.
	* pge-boot/GArgs.cc: New file.
	* pge-boot/GAssertion.cc: New file.
	* pge-boot/GBuiltins.cc: New file.
	* pge-boot/GDebug.cc: New file.
	* pge-boot/GDynamicStrings.cc: New file.
	* pge-boot/GFIO.cc: New file.
	* pge-boot/GIO.cc: New file.
	* pge-boot/GIndexing.cc: New file.
	* pge-boot/GLists.cc: New file.
	* pge-boot/GM2Dependent.cc: New file.
	* pge-boot/GM2EXCEPTION.cc: New file.
	* pge-boot/GM2LINK.cc: New file.
	* pge-boot/GM2RTS.cc: New file.
	* pge-boot/GNameKey.cc: New file.
	* pge-boot/GNumberIO.cc: New file.
	* pge-boot/GOutput.cc: New file.
	* pge-boot/GPushBackInput.cc: New file.
	* pge-boot/GRTExceptions.cc: New file.
	* pge-boot/GRTco.cc: New file.
	* pge-boot/GSFIO.cc: New file.
	* pge-boot/GSYSTEM.cc: New file.
	* pge-boot/GSelective.cc: New file.
	* pge-boot/GStdIO.cc: New file.
	* pge-boot/GStorage.cc: New file.
	* pge-boot/GStrCase.cc: New file.
	* pge-boot/GStrIO.cc: New file.
	* pge-boot/GStrLib.cc: New file.
	* pge-boot/GSymbolKey.cc: New file.
	* pge-boot/GSysExceptions.cc: New file.
	* pge-boot/GSysStorage.cc: New file.
	* pge-boot/Gabort.cc: New file.
	* pge-boot/Gbnflex.cc: New file.
	* pge-boot/Gcbuiltin.cc: New file.
	* pge-boot/Gdtoa.cc: New file.
	* pge-boot/Gerrno.cc: New file.
	* pge-boot/Gldtoa.cc: New file.
	* pge-boot/Glibc.cc: New file.
	* pge-boot/Glibm.cc: New file.
	* pge-boot/Gmcrts.cc: New file.
	* pge-boot/Gpge.cc: New file.
	* pge-boot/Gwrapc.cc: New file.
	* pge-boot/main.cc: New file.
	* pge-boot/network.cc: New file.

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