Recursion applied to old format & legacy libraries

[PaulStoffregen]

Recursion seems to be applied to old & legacy format libraries. According to the library spec:

https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5:-Library-specification

For backward compatibility with Arduino 1.0.x, the library author may opt to not place
source code into a folder called src. In this case the 1.0 library format is applied and the
source code is searched from the library root folder and the utility folder

Recursion is being used, compiling files in directories other than the main folder and utility. It might also be finding .c and .cpp files within the examples.

I will create a test case....

[PaulStoffregen]

Here is the test case. This compiles in 1.6.5, but fails on the latest hourly build.

https://github.com/PaulStoffregen/LegacyNorecurseTest

To reproduce the problem, install this library, then Verify its "GoodExample" example.

[ffissore]

Good catch! Working on it

[ffissore]

Fixed. Fix is available with latest hourly build http://www.arduino.cc/en/Main/Software#hourly