Removed old dependencies from package.xml

nokogiri and libxslt were removed from manifest.xml in 62838c1ac35f99a105ab32979801a637a6abd4eb.
Merge pull request #24 from meyerj/manifest-cleanup

Removed old dependencies from package.xml
Merge remote-tracking branch 'origin/master' into toolchain-2.8

Conflicts:
	package.xml