Bug#545078: lintian: warn if symbol file contains tag but no build-dep on dpkg-dev (>= 1.15.3~)

[Jakub Wilk <ubanus@users.sf.net>]

Package: lintian
Version: 2.2.14
Severity: wishlist

dpkg-dev 1.15.3 introduced the following change:

   * Support tags before symbols in symbols file contained in source packages.
     The first two tags are "optional" (use it to not fail if the symbol might
     disappear from the library without breaking the ABI) and "arch" to
     restrict the set of architectures where the symbol is supposed to exist.
     Thanks to Modestas Vainius <modestas@vainius.eu> for the patch.
     See dpkg-gensymbols(1) for more information. Closes: #521551

lintian should warn if symbol file contains tags but the package does not 
build-depend on dpkg-dev (>= 1.15.3~).

--
Jakub Wilk