sdk-installer: work around objdump problem

Apparently 32-bit objdump does not like the way we extract .pdb files
from git.exe and git-remote-https.exe: it always fails with "File
truncated". The 64-bit objdump seems to be unaffected by this bug.

Let's switch to using ldd instead, hopefully this will work around the
issue: we only need to release a new SDK every blue moon, anyway.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

sdk-installer/release.sh

@@ -47,8 +47,8 @@ do
         todo=${todo#* }
 	exes_and_dlls="$exes_and_dlls$file "
 
-        for dll in $(objdump -p "$BIN_DIR/$file" |
-                sed -n "s|^\tDLL Name: ||p")
+        for dll in $(ldd "$BIN_DIR/$file" |
+		sed -n "s|.*> $BIN_DIR/\\([^ ]*\\).*|\\1|p")
         do
                 case " $exes_and_dlls $todo " in
                 *" $dll "*) ;; # already found/queued