API: mbed header file - mbed lib revision - 91

API: mbed header file - mbed lib revision - 90

Bumped revision number

Enabled GCC_ARM for NRF51822 targets in official build

Merge pull request ARMmbed#412 from sg-/master

[MTS_GAMBIT] Add new target support

Bumped revision number

Merge pull request ARMmbed#342 from bcostm/master

[NUCLEO_F401RE] Remove call to Systick + bug fixes

Added LPC11U68 to the official build

Bumped revision number

Fix synchronization script