updated for version 7.4.476
Problem:    MingW: compiling with "XPM=no" doesn't work.
Solution:   Check for the "no" value. (KF Leong)  Also for Cygwin. (Ken
	    Takata)
Added tag v7-4-476 for changeset 4c29b75cae19
updated for version 7.4.477
Problem:    When using ":%diffput" and the other file is empty an extra empty
	    line remains.
Solution:   Set the buf_empty flag.
Added tag v7-4-477 for changeset f21a2f67bdbb
updated for version 7.4.478
Problem:    Using byte length instead of character length for 'showbreak'.
Solution:   Compute the character length. (Marco Hinz)
Added tag v7-4-478 for changeset fcb898dea2bc
updated for version 7.4.479
Problem:    MS-Windows: The console title can be wrong.
Solution:   Take the encoding into account. When restoring the title use the
	    right function. (Yasuhiro Matsumoto)
Added tag v7-4-479 for changeset e0f2ed0efb49
Update runtime files and translations.