The good news is that the Arduino_STM core and example repository I downloaded on this posting date works. I was able to successfully verify and download the blink sketch to my STM32F103 Nucleo.
The LED2 indicator does not blink, but the download completes with
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5/5 pages written2015-05-22T18:47:49 INFO src/stlink-common.c: Flash written and verified! jolly good!
Since I use macports for installs I had to create a link from ln /opt/local/lib/libusb-1.0.0.dylib /usr/local/lib/libusb-1.0.0.dylib. I chose this method as I am not ready to hack the scripts yet. There is some code in the scripts to look for parts of the dfu-utils in both paths, but not libusb. This was documented in the installation wiki, so thanks to whomever did that. It is nice when an install just simply works.
I suspect that the LED does not blink, as the Nucleo is only "Arduino" in that it can physically mate to some shields.
Since these forums are young, I seem to be missing the postings by @madias relating on how to set up basic serial. (I have plenty of FTDI bridges if needed) Perhaps the instructions of what traces/jumpers were in a PM or on another forum. I have no problems sending a PM, I suspect others may want to use these boards too. I did download the graphic of the pin layout from the other thread, but am not quite sure how to use it
At this point I am open to suggestions as to what to do next?