Dpkg: Say FUNCTIONS instead of METHODS when appropriate

debian/changelog

@@ -15,6 +15,7 @@ dpkg (1.18.2) UNRELEASED; urgency=low
       dpkg-architecture(1).
     - Document multiarch triplet in dpkg-architecture(1) TERMS section.
     - Remove “my” keyword from Dpkg perl modules function prototypes.
+    - Say FUNCTIONS instead of METHODS for Dpkg modules when appropriate.
 
   [ Updated programs translations ]
   * Dutch (Frans Spiesschaert). Closes: #789097

scripts/Dpkg/IPC.pm

@@ -45,7 +45,7 @@ other programs in an easy, yet flexible way, while hiding
 all the gory details of IPC (Inter-Process Communication)
 from you.
 
-=head1 METHODS
+=head1 FUNCTIONS
 
 =over 4
 

scripts/Dpkg/Path.pm

@@ -49,7 +49,7 @@ Dpkg::Path - some common path handling functions
 
 It provides some functions to handle various path.
 
-=head1 METHODS
+=head1 FUNCTIONS
 
 =over 8