Added (unused) IP multicast module.
Added test of gmtime() function.
Made system error unconditional if database can't be unlocked.
Corrected documentation.
Added test_gmtime.
Changed subscription-modification by ULDB

Now, the ULDB only modifies the subscription by a downstream LDM if the
transfer mode is primary. This is done because the ULDB feature
interacts with the autoswitching feature. An autoswitch from alternate
mode to primary mode risks receiving many products that won't make it
into the product-queue because they've already been received due to the
delay in termination of the (previous) upstream LDM in alternate mode.
Changed version to 6.11.3.2
v6.11.3.2
v6.11.3.2
Merge branch 'v6.11.3' into develop
Removed call to as_init() from upstream LDM
Improved autoshift API and refactored module
Adapted to new autoshift API
Changed client timeout from 60 to default 25 seconds
Added internal comment
Changed file-mode for main tutorial webpage
v6.11.3.3
Removed as_process() calls by upstream LDM

To eliminate error return.
v6.11.3.4
Completed IP multicast module.

Compiles. Not tested.