Tool to ease rdb file update to work on fdo#46808

Add a simple shell script to ease the regeneration of
types.rdb. This is a bit tricky to do and error prone.
I hope it will encourage people to work on fdo#46808.

Signed-off-by: Stephan Bergmann <sbergman@redhat.com> with additional changes:
* Moved offapi/update-rdb.sh to offapi/type_reference/update-rdb.sh, to make
  clear that it is all about offapi/type_reference only.
* Changed update-rdb.sh to take a list of idl files, so that a single instance
  of the script works for both offapi and udkapi.
* Some more simplifications/clean up of update-rdb.sh.
* Removed the udkapi/update-rdb.sh symlink (to avoid potential problems with
  symlinks checked into the git repo, like on Windows).
* Undid accidental(?) changes to typelibrary_history.txt, added a note about
  update-rdb.sh.

Change-Id: Ic1923e2b2b3af64251019b619b33c728a05b4a14

offapi/type_reference/typelibrary_history.txt

 Example of updating an incompatibly-changed type (com.sun.star.script.Converter,
-in this example) in the accompanying types.rdb:
+in this example) in the accompanying types.rdb (see also update-rdb.sh):
 
 .../core> mkdir tmp
 .../core> LD_LIBRARY_PATH=.../core/solver/unxlngx6/lib \

offapi/type_reference/update-rdb.sh

+#!/bin/bash
+
+# Basic argument checks
+if [ $# -lt 1 ]
+then
+  echo "usage:"
+  echo "    $0 <idl file list>"
+  echo ""
+  echo "example:"
+  echo "    $0 \\"
+  echo "      offapi/com/sun/star/auth/SSOManagerFactory.idl \\"
+  echo "      offapi/com/sun/star/auth/SSOPasswordCache.idl"
+  exit 1
+fi
+
+# Load env vars
+source "$(dirname "$0")"/../../config_host.mk 2>/dev/null
+
+set -e
+mkdir tmp
+for i in "$@"; do
+  "${OUTDIR_FOR_BUILD?}"/bin/regmerge tmp/out1.rdb /UCR \
+    "${WORKDIR_FOR_BUILD?}"/UnoApiPartTarget/"${i%.idl}".urd
+done
+"${OUTDIR_FOR_BUILD?}"/bin/regmerge tmp/out2.rdb / \
+  "${SRC_ROOT?}"/offapi/type_reference/types.rdb tmp/out1.rdb
+echo "sanity check diff:"
+diff <("${OUTDIR_FOR_BUILD?}"/bin/regview \
+  "${SRC_ROOT?}"/offapi/type_reference/types.rdb) \
+  <("${OUTDIR_FOR_BUILD?}"/bin/regview tmp/out2.rdb) && $? -le 1
+mv tmp/out2.rdb "${SRC_ROOT?}"/offapi/type_reference/types.rdb
+rm -r tmp