[libredwg] contributions v1.4 available

[Thien-Thi Nguyen]

See:

 http://www.gnuvola.org/wip/  (libredwg)

Details:

 d575173 [admin] Make create-changelog handle command-line args GNUishly.
         - several improvements to the command-line options processing
         - version bumped to 1.1

 828396d [admin] Rename directory build/ to build-aux/.
         - as suggested by the GNU evaluation team

 11287ce [admin] Clean up configure.in superficially; nfc.
         - small stuff