test-checkout.sh: Read test flags from Abe commit logs.

The test_previous_abe_cmd_line and test_previous_abe_manifest tests
report failures even when the change to the manifest was an
intentional result of a change in Abe. This is particularly annoying
in the tcwg-regression tests, where these failures can be reported
for other changes for as long as the Abe change remains the most
recent Abe commit.

Therefore, introduce new tags which can be incorporated into commit
messages, which indicate that the manifest comparisons should not
be done. These have the format:
[ABE_PREV_<MANIFEST|CMD>_<VERSION|ALL>]

For example, the following tags can be used:
[ABE_PREV_MANIFEST_GCC4_9] - skip the manifest comparison for the
                             previous manifest test on gcc 4.9
[ABE_PREV_CMD_GCC5]        - skip the manifest comparison for the
                             previous command line test on gcc 5
[ABE_PREV_CMD_ALL]         - skip the manifest comparison for the
                             previous command line test on all
                             GCC versions

Change-Id: I5753adb5e917da1141ef79037333cb54f88a167e

0 files changed, 0 insertions, 0 deletions