Some messages said 'typealias' and others said 'type alias'.
Change everything to use 'type alias' consistently (except
when it's talking about the keyword itself).
Most tests were using %swift or similar substitutions, which did not
include the target triple and SDK. The driver was defaulting to the
host OS. Thus, we could not run the tests when the standard library was
not built for OS X.
Swift SVN r24504
Diagnostics that point to the first bad token are marked with this option in
Diagnostics.def. Parser::diagnose treats the source location of such
diagnostics in a special way: if source location points to a token at the
beginning of the line, then it moves the diagnostic to the end of the previous
token.
This behaviour improves experience for "expected token X" diagnostics.
Swift SVN r7965
