Merge branch 'bw/maint-1.7.9-solaris-getpass'

The recent update to terminal I/O interface to get passwords &c
interactively didn't quite work on Solaris.

* bw/maint-1.7.9-solaris-getpass:
  Enable HAVE_DEV_TTY for Solaris
  terminal: seek when switching between reading and writing

diff --cc Makefile
index 15d13197d46b71f3720ec891210c35e6b2b2e8ec,9472ff768cf7e520c1c04da6e3036e22b025cd26..6b0c961d3acd6eb476c979e51f32a258e15c743d
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -1013,7 -909,7 +1013,8 @@@ ifeq ($(uname_S),SunOS
        NO_MKSTEMPS = YesPlease
        NO_REGEX = YesPlease
        NO_FNMATCH_CASEFOLD = YesPlease
 +      NO_MSGFMT_EXTENDED_OPTIONS = YesPlease
+       HAVE_DEV_TTY = YesPlease
        ifeq ($(uname_R),5.6)
                SOCKLEN_T = int
                NO_HSTRERROR = YesPlease