Synch With Bill's C5535 DSP Shield Changes

Includes HAL changes for DSP Shield as well as hardware\tools\c5000\bin
copy of avrdude
Merge with local copy.

GPIO Switch reliability, IIR noise shaping
Digital Read/Write performance improvements

Pulls GPIO read/write improvements into the trunk
Audio Library Changes

Adds support for:
dac IIR filter biquads
dac first order IIR filter

adc IIR filter biquads
adc first order IIR
dac / adc power up and down
adaptive filter switch and mode
rset24 bit
rget

courtesy Fernando Mujica
Fix small bug in audio library commit
Added Filter in place to IIR filtering scaling to IIR
Test Committ with auto linefeed on
Revert "Test Committ with auto linefeed on"

This reverts commit 419fa694762c87a2ae7188c6a9d35049752ae1e0.
auto linefeed?
Revert "auto linefeed?"

This reverts commit f17f290bb55914381e6dbd50f01f0647b20de374.
Test dos2unix 1
dos2Unix 2
dos2unix3
dos2unix4

this should be the last commit to synchronize line endings with
energia/Energia:C5000
Merge pull request #540 from wespo/C5000

C5000