libdpkg: Rename parse_open() to parsedb_open()

lib/dpkg/parse.c

@@ -505,7 +505,7 @@ parse_get_type(struct parsedb_state *ps, enum parsedbflags flags)
  * Open a file for RFC-822 parsing.
  */
 struct parsedb_state *
-parse_open(const char *filename, enum parsedbflags flags)
+parsedb_open(const char *filename, enum parsedbflags flags)
 {
   struct parsedb_state *ps;
   struct stat st;
@@ -714,7 +714,7 @@ int parsedb(const char *filename, enum parsedbflags flags,
   memset(&fs, 0, sizeof(fs));
   fs.fieldencountered = fieldencountered;
 
-  ps = parse_open(filename, flags);
+  ps = parsedb_open(filename, flags);
 
   new_pkg = &tmp_set.pkg;
   if (flags & pdb_recordavailable)

lib/dpkg/parsedump.h

@@ -70,7 +70,7 @@ struct field_state {
 };
 
 struct parsedb_state *
-parse_open(const char *filename, enum parsedbflags flags);
+parsedb_open(const char *filename, enum parsedbflags flags);
 void parse_close(struct parsedb_state *ps);
 
 typedef void parse_field_func(struct parsedb_state *ps, struct field_state *fs,