added build.xml file from jarvis build
modified build.xml to change jarvis to system-designer
added config files from jarvis. Modified for system designer
now creates the ./taskdefs folder if it doesn't exist
commented out a classpath to the unused jakarta library, added docs/data-structures.txt
commented out jakarta classpath
removed references to ximba
build works with no errors. caveat is that com/galelabs/common/LogAppender.java had to be removed
separated GUI from main program
added new SystemDesigner top level class
basic data structures in place
added command-line interpreter skeleton
added SDCmd interface for implementing commands. Added a few basic, initial commands. Compilation is successful
Merge branch 'github-master'

Bring in the default files for a github repo