* configure.in (target_makefile_frag) [alpha*-*]: Use mt-alphaieee.

 	* mt-alphaieee: New file.

 	* config/alpha/t-ieee: Remove multilibbing.
 	(TARGET_LIBGCC2_CFLAGS): Add -mieee.

 	* configure.host (alpha*-*) [libgcj_flags]: Add -mieee.

From-SVN: r39309