Rod, it's a known quirk of the Arduino build environment that if library A depends on library B, as is the case here with the Servo library requiring Wire, then the end user must explicitly #include both library headers. This is cleaner than physically copying the Wire library into the Servo library folder.
In other words, Thomas, I would expect the sketch above to work if you (a) add
after line 1, and
after line 15.
I found out that its a known Issue with the Galileo board if you go to section 1.7.12 in the release notes https://communities.intel.com/servlet/JiveServlet/previewBody/21837-102-6-25156/Galileo_RelNotes_329686_004.pdf It says that "
Servo library is not currently supported. The workaround is to access the Pulse Width
Modulator (PWM) directly as described below.