`get_software_versions` failing because of missing version files.

[maxibor]

(At least) on our EVA SGE cluster, the get_software_versions process is sometimes failing because of a lack of memory for the Java Virtual machine used by some programs (bug also reported by @alexhbnr and @arthurKocher ).

The .command.log contains this error:

Error occurred during initialization of VM
Unable to allocate 65536KB bitmaps for parallel garbage collection for the requested 2097152KB heap.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Two solutions to that:

• The quick fix: Increase the memory for the get_software_versions process
• The real fix: specify the Java virtual machine memory in the get_software_versions for the tools that use a JVM (with -J-Xmx${task.memory.toGiga()}g )

[maxibor]

More specifically, the v_toolname.txt of tools using JVM are all failing with one of the two errors:

• Error occurred during initialization of VM
• Unable to allocate 65536KB bitmaps for parallel garbage collection for the requested 2097152KB heap.

[jfy133]

@maxibor as we already have the fix for the missing threads for FastQC ready for a patch release, I've changed my mind - you can make a PR if you want to add the -Xmx stuff to get software versions.