[m-dev.] prepare.sh tests for the wrong thing

[Zoltan Somogyi]

After doing a "git pull" of the recent changes to boehm_gc,
my workspace's boehm_gc directory still contained a bunch of files
and directories. The prepare.sh script checks whether it needs to
set up submodules, but gets the test wrong: it tests for the presence
of a directory that is present whether or not the submodule has already
been set up. As a result, prepare.sh does not set up the submodule
even though it needs to.

Attached is a file that lists the contents of my workspace's boehm_gc
directory immediately after the git pull. An "mmake realclean" immediately
afterward left the boehm_gc directory unchanged.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: BOEHM_GC_AFTER_GIT_PULL
Type: application/octet-stream
Size: 3779 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/developers/attachments/20151003/761d7e92/attachment.obj>