Fix for Linker and I2C

Changes

• Fixed an issue with the rand() function which returned always the same value when executed: changed linker flags in platform.txt and removed --nano.specs
• Fixed I2C receive bug

First Release

XMC for Arduino

The traced back initial release of the XMC integration into the Arduino IDE

Known bugs:

• rand() function returns always the same value when executed
• Problem with I2C receive