Apply blanks at EOF

Another re-roll to fix --ignore-space-change in combination with --whitespace=fix when the patch has CR-LF line endings.

Björn Gustavsson (5):
apply: Don't unnecessarily update line lengths in the preimage
apply: Remove the quick rejection test
No change.

apply: Allow blank context lines to match beyond EOF
The fix and an updated commit message.

t4124: Add additional tests of --whitespace=fix
One test case split into two and two new test cases.

t3417: Add test cases for "rebase --whitespace=fix"
No change.

 builtin-apply.c                  |  187 +++++++++++++++++++++++++++++--------
 t/t3417-rebase-whitespace-fix.sh |  126 +++++++++++++++++++++++++
 t/t4104-apply-boundary.sh        |    9 ++
 t/t4124-apply-ws-rule.sh         |  170 ++++++++++++++++++++++++++++++++++
 4 files changed, 451 insertions(+), 41 deletions(-)
 create mode 100755 t/t3417-rebase-whitespace-fix.sh