proposed change of gpio_api
address concern from watarai-san about code size and performance by creating a set of common initialization functions
fix indentation and make helpers static inline
fix more tabs to spaces
Remove F401RE from IAR exporter.

http://mbed.org/users/mbed_official/code/mbed/issues/12
Update MBED_LIBRARY_VERSION to latest revision
NORDIC can now reset using serial break
Merge branch 'master' of https://github.com/mbedmicro/mbed
Added PwmOut for LPC1549 target
Protection against concurrent access to USBHost

Fixed regression: Protection against concurrent access to USBHost using
locking class
Use Lock class within USBHost
Merge pull request #201 from toyowata/master

Added PwmOut for LPC1549 target
Merge pull request #202 from donatieng/master

Protection against concurrent access to USBHost
Typo corrected
[LPC1114][GCC_ARM]: Added export functionality
Merge pull request #203 from dinau/lpc1114_gcc_exporter

[LPC1114][GCC_ARM]: Added export functionality
Merge pull request #198 from mazgch/gpio_api

proposed change of gpio_api (new update pull request)