(mfontset): Initialize font_spec_list member. (mfontset_copy): Load fontset if necessary.
(mfontset): Initialize font_spec_list member.
(mfontset_copy): Load fontset if necessary.

xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib