[bug-gettext] xgettext Javascript scanner bugfix and test suite improvements

[Andreas Stricker]

Hi

This is a serie of patches to improve the test suite and fix one bug
addressing the issue of missing the end of string when they contain
escaped backslashes.

Regards, Andreas

 gettext-tools/src/x-javascript.c          |  2 +-
 gettext-tools/tests/xgettext-javascript-2 | 12 ++++++++++++
 gettext-tools/tests/xgettext-javascript-3 | 20 ++++++++++----------
 gettext-tools/tests/xgettext-javascript-4 | 20 ++++++++++----------
 gettext-tools/tests/xgettext-javascript-5 | 78 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 111 insertions(+), 21 deletions(-)