Beginnings of "if" command evaluator

Signed-off-by: Matt Kilgore <mattkilgore12@gmail.com>
Pre-processing working -- Initial work for syntax tree
Working on parser setup
Working on command-line arguments parser
merge branch 'before-if'

Merged in changes for pre-processor as well as beginnings for parser and
abstract syntax tree setup.

Conflicts:
	text_process/text_process.bm