ISSUE #11300: Improve Routing Syntax Import Error

modified FileLoaderLoadException message to present the previous (Parse)Exception first
ISSUE #11300: Improve Routing Syntax Import Error
modified FileLoaderLoadException message to present the previous (Parse)Exception first
/2
Addition of some comment lines, TODO: tests
Reverted changes in formatting
Merge branch 'master' of github.com:JanDC/symfony

Conflicts:
	src/Symfony/Component/Config/Exception/FileLoaderLoadException.php