Adds defaults for gtkglk.

As (my fork of) gtkglk now functions properly with Glulxe, I thought it would be helpful to include defaults for it.
Merge pull request #3 from zadenikt/patch-1

Adds defaults for gtkglk.
Start rigging up call-count profiling.
Retain and output the --profcalls information.
Comment.
Analyze the call-count info.
Adjust show_calls display format. Include a check for whether there's
any calls data.
Add a list_by function.
Merge branch 'master' of github.com:erkyrath/glulxe
Merge branch 'master' into debugger