Fix escaped sequences in regular expressions

Regression after commit bd96a6f7b7,
which changed meaning of these.

Thanks Stephan!

Change-Id: I43cb871de32bd01d98e9adbb6c20b4e3c88ce715
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99348
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

bin/check-implementer-notes.py

@@ -11,7 +11,7 @@ wiki_pages = [
 
 # get all commit hashes mentioned in implementer notes
 wiki_commit_hashes = {}
-query = re.compile(r'\{\{commit\|(\\w+)\|\\w*\|\\w*\}\}', re.IGNORECASE)
+query = re.compile(r'\{\{commit\|(\w+)\|\w*\|\w*\}\}', re.IGNORECASE)
 for page in wiki_pages:
     r = http.request('GET', page)
     data = json.loads(r.data.decode('utf-8'))

bin/find-unused-defines.py

@@ -99,7 +99,7 @@ def in_exclusion_set( a ):
     return False;
 
 # find defines, excluding the externals folder
-a = subprocess.Popen(r"git grep -hP '^#define\s+\w\w\w\w+\s*' -- \"[!e][!x][!t]*\" | sort -u", stdout=subprocess.PIPE, shell=True)
+a = subprocess.Popen("git grep -hP '^#define\\s+\\w\\w\\w\\w+\\s*' -- \"[!e][!x][!t]*\" | sort -u", stdout=subprocess.PIPE, shell=True)
 
 name_re = re.compile(r"#define\s+(\w+)")
 with a.stdout as txt:

bin/find-unused-typedefs.py

@@ -3,7 +3,7 @@
 import subprocess
 
 # find typedefs, excluding the externals folder
-a = subprocess.Popen(r"git grep -P 'typedef\s+.+\s+\w+;' -- \"[!e][!x][!t]*\"", stdout=subprocess.PIPE, shell=True)
+a = subprocess.Popen("git grep -P 'typedef\\s+.+\\s+\\w+;' -- \"[!e][!x][!t]*\"", stdout=subprocess.PIPE, shell=True)
 
 # parse out the typedef names
 typedefSet = set()