- fix portable linking with libintl, see info '(gettext) src/Makefile'
- don't hardcode libdl

Index: src/Makefile.in
--- src/Makefile.in.orig
+++ src/Makefile.in
@@ -566,7 +566,7 @@ libm17n_core_la_SOURCES = \
 	textprop.h textprop.c \
 	mtext-lbrk.c mtext-wseg.c
 
-libm17n_core_la_LIBADD = @XML2_LD_FLAGS@ @THAI_WORDSEG_LD_FLAGS@
+libm17n_core_la_LIBADD = @XML2_LD_FLAGS@ @THAI_WORDSEG_LD_FLAGS@ @LTLIBINTL@
 libm17n_core_la_LDFLAGS = -export-dynamic ${VINFO}
 libm17n_la_SOURCES = \
 	charset.h charset.c \
@@ -576,7 +576,7 @@ libm17n_la_SOURCES = \
 	mlocale.h locale.c \
 	m17n.h m17n.c
 
-libm17n_la_LIBADD = ${top_builddir}/src/libm17n-core.la -ldl
+libm17n_la_LIBADD = ${top_builddir}/src/libm17n-core.la
 libm17n_la_LDFLAGS = -export-dynamic ${VINFO}
 FLT_SOURCES = \
 	internal-flt.h \