compile-libvlc: mitigate potentially huge linker options

the script is aggregating every .pc from the contribs, under specific circumstances this may create too many arguments for the linker

the script now removes recurring patterns

-lintl -lintl -lm -lintl -lm -lintl -lintl -lm

becomes:

-lintl -lm

buildsystem/compile-libvlc.sh

@@ -675,7 +675,9 @@ rm ${REDEFINED_VLC_MODULES_DIR}/syms
 ###########################
 
 VLC_MODULES=$(avlc_find_modules ${REDEFINED_VLC_MODULES_DIR})
-VLC_CONTRIB_LDFLAGS=$(for i in $(/bin/ls $VLC_CONTRIB/lib/pkgconfig/*.pc); do avlc_pkgconfig --libs $i; done |xargs)
+VLC_CONTRIB_LDFLAGS=$(pkg-config --libs-only-L --libs-only-other  $(/bin/ls $VLC_CONTRIB_/lib/pkgconfig/*.pc))
+#$(avlc_pkgconfig --libs $(/bin/ls $VLC_CONTRIB/lib/pkgconfig/*.pc))
+VLC_CONTRIB_LDLIBS=$(pkg-config --libs-only-l  $(/bin/ls $VLC_CONTRIB_/lib/pkgconfig/*.pc) | python3 $LIBVLCJNI_SRC_DIR/buildsystem/compress-ldlibs.py)
 
 # Lua contrib doesn't expose a pkg-config file with libvlc 3.x and is
 # not probed by the previous command in VLC_CONTRIB_LDFLAGS, so probe
@@ -695,6 +697,7 @@ $NDK_BUILD -C $LIBVLCJNI_SRC_DIR/libvlc \
     VLC_BUILD_DIR="$VLC_BUILD_DIR" \
     VLC_CONTRIB="$VLC_CONTRIB" \
     VLC_CONTRIB_LDFLAGS="$VLC_CONTRIB_LDFLAGS" \
+    VLC_CONTRIB_LDLIBS="$VLC_CONTRIB_LDLIBS" \
     VLC_MODULES="$VLC_MODULES" \
     VLC_LDFLAGS="$VLC_LDFLAGS" \
     VLC_BUILD_JNI="$AVLC_BUILD_JNI" \