* Makefile.tpl: Don't set unused enable_shared, enable_threads macros.

	* Makefile.in: Regenerate.
	* configure.in: Remove unused logic relating to --enable-shared
	and --enable-threads.  Remove bogus comments.  Remove redundant
	noconfigdirs.
	* configure: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@63776 138bc75d-0d04-0410-961f-82ee72b054a4