Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update to tcsh 6.18.01.

Update to tcsh 6.17.00.

Approved by: re (kensmith)

tcsh: fix abort in cleanup_until(), caused by internal xgetpass()

The xgetpass() function pushes a cleanup entry for &osa, but then
attempts to flush the stack until an entry matching &sa. The two
object pointers do not match, so the stack is popped too much,
and then cleanup_until calls abort() when it unexpectedly hits
the bottom of the cleanup stack.

Reported by: Paul B. Mahol, onemda at gmail.com,
Pietro Cerutti, gahr at gahr.ch
PR: bin/124191
Reviewed by: mp, kris
MFC after: 2 days

This commit was generated by cvs2svn to compensate for changes in r167465,
which included commits to RCS files with non-trunk default branches.

Import of tcsh-6.15.00

Import of tcsh-6.14.00

Import of tcsh-6.13.00

Import of tcsh-6.12.00

Import tcsh-6.11

Initial import of slightly trimmed tcsh 6.10

Offical fixes to allow longer lines in the history and tweak expand_lex()
useage.

Import the latest version of the 44BSD C-shell -- tcsh-6.09.