PATHS keyword has global scope.

ECLIPSE resolves path aliases defined in an included file globally, i.e.
/
|> include.inc
|-- PATHS 'alias' 'path/to/dir'
|> main.data
|-- INCLUDE 'include.inc' /
| [...]
|-- INCLUDE '$alias/file.inc' /

will resolve as 'path/to/dir/file.inc'. This behaviour is now adopted by
opm-parser.

testdata/parser/include/foo_invalid.inc

@@ -0,0 +1,3 @@
+PATHS
+ 'FOOPATH' 'include/invalid' /
+/