rtl cleanup.
added initial support for the avnet board.
added initial project files for the avnet board.
added Avnet Spartan3-1500 Eval Board documentation.
Update README.md
updated amiga clock handling & moved all generated clock signals from inside Minimig module to toplevel amiga_clk module.
added documentation for 4 AVbus modules:
     1MB SRAM module
    64MB SDRAM module
    16MB FLASH module
    Communications/Memory module containing
         1MB SRAM
        64MB SDRAM
        16MB FLASH
        10/100/1000 ethernet PHY
        IrDA
        USB2
        PC Card (PCMCIA)
        I don't see it in this guide but my board has empty DIP location for Bluetooth module
            Mine is in storage, as are printouts of my PDF guide for it. Will update someday
            to that, I found these copies on general internet as Avnet has dropped it.
Merge pull request #1 from amigabill/master

Documentation for Avnet Spartan 3 PCI card addons
minimig updated to FSB130117 release.
Merge branch 'master' of github.com:rkrajnc/minimig-de1 into clock28
Amber whitespace cleanup.
temporarily commented out the params that are causing compile errors in Quartus > 10.1.
added define options for serial/parallel audio output.
work-in-progress version of new sigma-delta.
added constant drivers for FLASH chip, since it is no longer used and Quartus complains.
some compile warnings cleaned.
TG68K.C core updated to tobiflex version 2013-02-07.
added TG68K.C sources from 2013-02-07.
Audio.v updated with fixes from master.
source files shouldnt be executable.