There's nothing particularly secret in idmap.tdb, so create it with
tree930e605a06c2394868772667e2369dd32a0254b5
-rw-r--r-- 11 .cvsignore
-rw-r--r-- 17982 COPYING
-rw-r--r-- 2583 Manifest
-rw-r--r-- 8269 README
-rw-r--r-- 0 Read-Manifest-Now
-rw-r--r-- 1175 Roadmap
-rw-r--r-- 15484 WHATSNEW.txt
drwxr-xr-x - docs
drwxr-xr-x - examples
drwxr-xr-x - packaging
drwxr-xr-x - pcp
drwxr-xr-x - source
drwxr-xr-x - swat
drwxr-xr-x - testsuite