Version updated to 0.9.2
Fixed various spelling issues in spec

Replaced perl utility dependencies perl-XML-LibXML and perl-XML-Simple
with python-lxml.
Fixed the way boolean configuration values are converted to bools by
replacing bool() usage with a function that checks for specific string
values in order to determine True or False.

bool() will evaluate to True for all non empty strings.

Reported-by: Leonid Veytser <veytser@ll.mit.edu>
See https://github.com/adjacentlink/emane/issues/14
replaced perl dependencies with python dependencies for etce-utils package scripts
Added README.md to EXTRA_DIST
Merge branch 'release/v0.9.2' into develop