libiconv: Add libintl dependency

Without it, build is failing to generate executable.
Hidden dependencies are frustrating.

This also makes sure the libintl symbols are expected without
'libintl_' prefix, like in all MSYS modules which use it.

libiconv/PKGBUILD

@@ -55,6 +55,7 @@ build() {
   cd ${srcdir}/${pkgname}-${pkgver}
   ./configure \
     --prefix=/usr \
+    --without-libintl-prefix \
     --enable-static \
     --enable-shared
 
@@ -68,7 +69,7 @@ check() {
 }
 
 package_libiconv() {
-  depends=('gcc-libs')
+  depends=('gcc-libs' 'libintl')
 
   mkdir -p ${pkgdir}/usr
   cp -rf ${srcdir}/dest/usr/bin ${pkgdir}/usr/