Python: Accept test changes. I think these reflect the 'parse mode chars should not be considered chars' issue.

python/ql/test/library-tests/regex/Characters.expected

@@ -36,6 +36,7 @@
 | (?:[^%]\|^)?%\\((\\w*)\\)[a-z] | 22 | 23 |
 | (?:[^%]\|^)?%\\((\\w*)\\)[a-z] | 24 | 25 |
 | (?P<name>[\\w]+)\| | 10 | 12 |
+| (?m)^(?!$) | 2 | 3 |
 | (?m)^(?!$) | 4 | 5 |
 | (?m)^(?!$) | 8 | 9 |
 | (\\033\|~{) | 1 | 5 |

python/ql/test/library-tests/regex/FirstLast.expected

@@ -22,8 +22,7 @@
 | (?P<name>[\\w]+)\| | first | 9 | 14 |
 | (?P<name>[\\w]+)\| | last | 9 | 13 |
 | (?P<name>[\\w]+)\| | last | 9 | 14 |
-| (?m)^(?!$) | first | 4 | 5 |
-| (?m)^(?!$) | first | 8 | 9 |
+| (?m)^(?!$) | first | 2 | 3 |
 | (?m)^(?!$) | last | 4 | 5 |
 | (?m)^(?!$) | last | 8 | 9 |
 | (\\033\|~{) | first | 1 | 5 |

python/ql/test/library-tests/regex/GroupContents.expected

@@ -8,6 +8,7 @@
 | (?:[^%]\|^)?%\\((\\w*)\\)[a-z] | 0 | 10 | (?:[^%]\|^) | 3 | 9 | [^%]\|^ |
 | (?:[^%]\|^)?%\\((\\w*)\\)[a-z] | 14 | 19 | (\\w*) | 15 | 18 | \\w* |
 | (?P<name>[\\w]+)\| | 0 | 15 | (?P<name>[\\w]+) | 9 | 14 | [\\w]+ |
+| (?m)^(?!$) | 0 | 4 | (?m) | 2 | 3 | m |
 | (?m)^(?!$) | 5 | 10 | (?!$) | 8 | 9 | $ |
 | (\\033\|~{) | 0 | 9 | (\\033\|~{) | 1 | 8 | \\033\|~{ |
 | \\[(?P<txt>[^[]*)\\]\\((?P<uri>[^)]*) | 2 | 16 | (?P<txt>[^[]*) | 10 | 15 | [^[]* |

python/ql/test/library-tests/regex/Regex.expected

@@ -77,9 +77,11 @@
 | (?P<name>[\\w]+)\| | sequence | 0 | 15 |
 | (?m)^(?!$) | $ | 8 | 9 |
 | (?m)^(?!$) | ^ | 4 | 5 |
-| (?m)^(?!$) | empty group | 0 | 4 |
+| (?m)^(?!$) | char | 2 | 3 |
 | (?m)^(?!$) | empty group | 5 | 10 |
+| (?m)^(?!$) | non-empty group | 0 | 4 |
 | (?m)^(?!$) | sequence | 0 | 10 |
+| (?m)^(?!$) | sequence | 2 | 3 |
 | (?m)^(?!$) | sequence | 8 | 9 |
 | (\\033\|~{) | char | 1 | 5 |
 | (\\033\|~{) | char | 6 | 7 |