Update build.xml

Jars are no longer necessary.  Forge self-downloads.
Update build.xml for MC 1.4.6

Just changed the version numbers to ensure that the correct version of forge and MCP are downloaded
Pipes replace blocks like grass, vines, etc.
Pipe place sound.
Merge pull request #523 from tcooc/patch-itempipe

ItemPipe placing changes
Override shouldRefresh.
Fix Filler Flatten

Now goes to the full 256 instead of 128, must have been overlooked,
Update for MCP updates with MC1.4.7
Stacked tanks no longer store different liquids
Merge pull request #535 from kemurphy/master

Fix Issue #534
Mcp naming fix.
Fixed NBT data not synching when manipulating the diamond pipe gui.
Made transactor alert inventory changes

Eliminates some client-server sync issues (given that the TE alerts server).
Also enables things like Factorization Barrels to update their item count.
Merge pull request #536 from MrTJP/patch-2

Made transactor alert inventory changes
Merge pull request #530 from DeliciousJaffa/master

Filler Flatten only reaching 128
Change the filler to stop it's use as a mining tool:
1. It empties from the top down now.
2. It uses less "max power" now.
3. Entity items dropped by the filler last 20 ticks.

It still works very well (better in fact) as a clearing and building
tool, but it's not a mining tool any more.

With thanks to the Mindcrack crew for demonstrating it's obvious flaws.
Make gates and wires available for other mods in "preInitialize" phase
Merge pull request #539 from Flow86/patch-gate

Make gates and wires available for other mods in "preInitialize" phase
Merge pull request #522 from ft975/master

Updated build.xml for MC 1.4.6
Merge pull request #525 from aznhe21/patch-pipes-refresh

Pipes should not refresh.
Merge pull request #469 from MrTJP/patch-1

Update build.xml