gnatcmd.adb: (MAKE): Add new translations: -b /BIND_ONLY, -c /COMPILE_ONLY, -l /LINK_ONLY

gnatcmd.adb: (MAKE): Add new translations: -b /BIND_ONLY, -c /COMPILE_ONLY, -l /LINK_ONLY

	* gnatcmd.adb: (MAKE): Add new translations: -b /BIND_ONLY,
	-c /COMPILE_ONLY, -l /LINK_ONLY

	* opt.ads:
	(Bind_Only): New Flag
	(Link_Only): New flag

	* switch.adb (Scan_Make_Switches): Add processing for -b (Bind_Only)
	and -l (Link_Only)

	* makeusg.adb: Add new switches -b and -l. Update Copyright notice.

	* make.adb:
	(Do_Compile_Step, Do_Bind_Step, Do_Link_Step): New flags.
	(Gnatmake): Set the step flags. Only perform a step if the
	corresponding step flag is True.
	(Scan_Make_Arg): Reset the bind and link step flags when -u
	or -gnatc has been specified.

From-SVN: r47694