[patch 0/3] fix some gdb.base/paginate-bg-execution.exp problems

[Sandra Loosemore]

This series of patches fixes some problems I ran into testing 
gdb.base/paginate-bg-execution.exp on a remote Windows host via ssh -T 
(that is, no TTY).

Part 1 is the fix previously suggested by Pedro here:
https://sourceware.org/ml/gdb-patches/2015-09/msg00637.html

Part 2 is another fix to the pagination code, and part 3 fixes a think-o 
in the test .exp file itself.

The results for this test with these patches look better, but I'm still 
getting some pattern match failures due to too many end-of-line \r 
characters in the output.  I still need to investigate that; I think we 
have a patch on our local branch that's preventing those extra 
characters from being generated, but I'm seeing different failures there 
instead.  :-S  Anyway, I think that is separate from the pagination/TTY 
issues, so I'd like to get the fixes I have in, at least.

-Sandra