Log Message:
Updated pkglint to 5.3.2

Changes since 5.3.1:

Alignment of variable values is no longer checked by single line, but by
the complete block (e.g. SUBST_*).  Pkglint now checks that all variables
belonging to a block are indented consistently, so that their values are
aligned nicely.

Since pkglint does not report warnings, but only notes, and since it can
fix them automatically, the burden on the package developers will be very
low. Especially, since these notes are only printed when pkglint is called
with the -Wspace or -Wall options.

Also, pkglint supports running its unit tests now.