this gets called when the op fails, either at initialization or later on;
it clears the project's sched_rpc_pending flag if needed.
This fixes a bug that caused user-requested RPCs to retry every 10 seconds
when the network is down.
- client: if debt-adjust period is too long, reset accounting.
Otherwise we'll get this infinitely.
- API: all optional alpha argument to TEXTURE_DESC::draw()
svn path=/trunk/boinc/; revision=17195