Increase size of channel.xmltvid.

Some xmltvids are larger than 64 characters, due to strange encodings
used by some listings providers.  Change the xmltvid to be up to 255
characters, which should handle any xmltvid that may ever be created.
Thanks to Karl Dietz for the information on XMLTV design and the
suggestion to use 255 characters.

mythtv/bindings/perl/MythTV.pm

@@ -114,7 +114,7 @@ package MythTV;
 # schema version supported in the main code.  We need to check that the schema
 # version in the database is as expected by the bindings, which are expected
 # to be kept in sync with the main code.
-    our $SCHEMA_VERSION = "1267";
+    our $SCHEMA_VERSION = "1268";
 
 # NUMPROGRAMLINES is defined in mythtv/libs/libmythtv/programinfo.h and is
 # the number of items in a ProgramInfo QStringList group used by

mythtv/bindings/python/MythTV/static.py

@@ -5,7 +5,7 @@
 """
 
 OWN_VERSION = (0,25,-1,1)
-SCHEMA_VERSION = 1267
+SCHEMA_VERSION = 1268
 NVSCHEMA_VERSION = 1007
 MUSICSCHEMA_VERSION = 1018
 PROTO_VERSION = '64'

mythtv/libs/libmythtv/dbcheck.cpp

@@ -21,7 +21,7 @@ using namespace std;
    mythtv/bindings/perl/MythTV.pm
 */
 /// This is the DB schema version expected by the running MythTV instance.
-const QString currentDatabaseVersion = "1267";
+const QString currentDatabaseVersion = "1268";
 
 static bool UpdateDBVersionNumber(const QString &newnumber, QString &dbver);
 static bool performActualUpdate(
@@ -5562,6 +5562,16 @@ NULL
             return false;
     }
 
+    if (dbver == "1267")
+    {
+        const char *updates[] = {
+"ALTER TABLE channel MODIFY xmltvid VARCHAR(255) NOT NULL DEFAULT '';",
+NULL
+};
+        if (!performActualUpdate(updates, "1268", dbver))
+            return false;
+    }
+
     return true;
 }