* new ant targets

- trimMtnRev: create a new property with the revision trimmed to  8 characters.
  - getExtendedVersion: create a new property that includes the full version with the shortened MTN revision tacked on
  - debchange:  automatically update debian/changelog with the I2P version. Called by the "debian" target unless the property noAutoDebchange is set.
  - debian-tarball: export i2p.i2p branch to a new directory, remove the binaries like jbigi and launch4j, and create a tarball.
* move packages created by "ant debian" to ${basedir}
* add debian/changelog to .mtn-ignore since it is now automatically updated (by default).
* add *.deb to .mtn-ignore

.mtn-ignore

@@ -16,6 +16,7 @@ _jsp\.java$
 \.su2$
 \.tar$
 \.war$
+.\deb$
 \.zip$
 ^\.
 ^build
@@ -24,6 +25,7 @@ _jsp\.java$
 /build
 /classes/
 ^debian/copyright
+^debian/changelog
 override.properties
 sloccount.sc
 ^reports/