Change libsmi url and Lua version in macosx-setup.sh

The libsmi url in macosx-setup.sh was dead, it's now an https site not ftp.
Also we were pulling down Lua 5.1.5 but should be pullsing down 5.2.3.
Lastly, macosx-setup cerates macosx-support-libs directory, which needs
to be ignored.

Change-Id: I79dc833dbc54fda8b237c5ada64f3564ce4f4cde
Reviewed-on: https://code.wireshark.org/review/360
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>

.gitignore

@@ -201,6 +201,7 @@ ui/qt/config.pri
 .DS_Store
 cscope.*
 tags
+macosx-support-libs
 packaging/macosx/COPYING.txt
 packaging/macosx/Info.plist
 packaging/macosx/osx-dmg.sh

macosx-setup.sh

@@ -111,9 +111,8 @@ LIBGPG_ERROR_VERSION=1.10
 #
 LIBGCRYPT_VERSION=1.5.0
 GNUTLS_VERSION=2.12.19
-# Stay with Lua 5.1 when updating until the code has been changed
-# to support 5.2
-LUA_VERSION=5.1.5
+# Default to 5.2 now, unless user overrides it later
+LUA_VERSION=5.2.3
 PORTAUDIO_VERSION=pa_stable_v19_20111121
 #
 # XXX - they appear to have an unversioned gzipped tarball for the
@@ -1181,7 +1180,7 @@ fi
 
 if [ "$LIBSMI_VERSION" -a ! -f libsmi-$LIBSMI_VERSION-done ] ; then
     echo "Downloading, building, and installing libsmi:"
-    [ -f libsmi-$LIBSMI_VERSION.tar.gz ] || curl -L -O ftp://ftp.ibr.cs.tu-bs.de/pub/local/libsmi/libsmi-$LIBSMI_VERSION.tar.gz || exit 1
+    [ -f libsmi-$LIBSMI_VERSION.tar.gz ] || curl -L -O https://www.ibr.cs.tu-bs.de/projects/libsmi/download/libsmi-$LIBSMI_VERSION.tar.gz || exit 1
     gzcat libsmi-$LIBSMI_VERSION.tar.gz | tar xf - || exit 1
     cd libsmi-$LIBSMI_VERSION
     CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1