Renamed a few extension-less python handlers with a .py extension for consistency

src/filters/rcl7z.py

@@ -3,7 +3,7 @@
 # 7-Zip file filter for Recoll
 
 # Thanks to Recoll user Martin Ziegler
-# This is a modified version of rclzip, with some help from rcltar
+# This is a modified version of rclzip.py, with some help from rcltar.py
 #
 # Normally using py7zr https://github.com/miurahr/py7zr
 #

src/filters/rcldia.py

@@ -6,7 +6,7 @@ from __future__ import print_function
 # stefan.friedel@iwr.uni-heidelberg.de 2012
 #
 # add the following to ~/.recoll/mimeconf into the [index] section:
-# application/x-dia-diagram = execm rcldia;mimetype=text/plain;charset=utf-8
+# application/x-dia-diagram = execm rcldia.py;mimetype=text/plain;charset=utf-8
 # and into the [icons] section:
 # application/x-dia-diagram = drawing
 # and finally under [categories]:

src/filters/rclexecm.py

@@ -372,7 +372,7 @@ def main(proto, extract):
 
     params = {'filename' : makebytes(path)}
 
-    # Some filters (e.g. rclaudio) need/get a MIME type from the indexer.
+    # Some filters (e.g. rclaudio.py) need/get a MIME type from the indexer.
     # We make a half-assed attempt to emulate:
     mimetype = _g_config.mimeType(path)
     if not mimetype and not _g_mswindows:

src/filters/rclinfo.py

@@ -141,7 +141,7 @@ class InfoSimpleSplitter:
                         if name == b'File':
                             infofile = value
                 except Exception as err:
-                    print("rclinfo: bad line in %s: [%s] %s\n" % \
+                    print("rclinfo.py: bad line in %s: [%s] %s\n" % \
                           (infofile, line, err), file = sys.stderr)
                     nodename = prevnodename
                     node += line

src/filters/rclrar.py

@@ -60,7 +60,7 @@ except Exception as ex:
 # (https://www.rarlab.com/rar_add.htm). The unrar-free version fails
 # with the message "Failed the read enough data"
 # 
-# This is identical to rclzip except I did a search/replace from zip
+# This is identical to rclzip.py except I did a search/replace from zip
 # to rar, and changed this comment.
 class RarExtractor:
     def __init__(self, em):

src/filters/rcltar.py

@@ -2,7 +2,7 @@
 
 # Tar-file filter for Recoll
 # Thanks to Recoll user Martin Ziegler
-# This is a modified version of /usr/share/recoll/filters/rclzip
+# This is a modified version of /usr/share/recoll/filters/rclzip.py
 # It works not only for tar-files, but automatically for gzipped and
 # bzipped tar-files at well.
 

src/filters/rclzip.py

@@ -51,7 +51,7 @@ if not hasrclconfig:
 # and stores it in the catalog as an unicode object. Else it uses the
 # binary string, which it decodes as CP437 (zip standard).
 #
-# When reading the file, the input file name is used by rclzip
+# When reading the file, the input file name is used by rclzip.py
 # directly as an index into the catalog.
 #
 # When we send the file name data to the indexer, we have to serialize