5/packages: Add curl and update all packages with RTEMS 5 and LibBSD

- Update rtems-bsp support to correctly handle hosts for BSP.
- Clean up the options for a BSP.
- Check all RTEMS 5 packages and add 5/rtems-packages for all that build.
- Update download locations and checksum of all packages.

- The work requires the kernel and Libbsd hacve the same prefix.

source-builder/sb/rtems-build-dep

@@ -141,7 +141,7 @@ fi
 # Library file
 #
 if [ ${op} = "library" ]; then
-    if [ "${OS}" = "Windows_NT" -a "${OSTYPE}" -ne "cygwin" ]; then
+    if [ "${OS}" = "Windows_NT" -a "${OSTYPE}" != "cygwin" ]; then
 	sep=';'
     else
 	sep=':'