Add gpl 3.0 only with GCC exception 3.1 rule

Signed-off-by: Alexander zur Bonsen <alexander.zur.bonsen@tngtech.com>

Author: alexzurbonsen

src/licensedcode/data/rules/gpl-3.0_with_gcc-exception-3.1_16.RULE

@@ -0,0 +1,7 @@
+---
+license_expression: gpl-3.0 WITH gcc-exception-3.1
+is_license_reference: yes
+relevance: 100D
+---
+
+{{GPL 3.0}} with {{GCC Runtime Library Exception 3.1}}

test_file.txt

@@ -0,0 +1,11 @@
+Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ .
+     http://www.apache.org/licenses/LICENSE-2.0
+ .
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.