Use hex format for NRF51822 target
Updated exporters to a merge-friendly format
Restore serial_api.c on LPC1768

Michael's GPIO fix changed this to a previous version, this commit restores
it to the last version.
Merge branch 'master' of github.com:mbedmicro/mbed
Merge branch 'master' of https://github.com/mbedmicro/mbed
[GCC_ARM][LPC11U35][LPC1114][STMF407]: Modified build scripts
1. Added to Makefile templates for LPC11U35 and STM32F407
2. Added output facility of HEX file, LIST file and MAP file
Rename Nordic soft-device folder. The mbed IDE rejects dots in folder names.
Solved conflict possibility.
Merge branch 'mbed.org/master'

Conflicts:
	workspace_tools/export/gccarm.py
Merge pull request #213 from dinau/gcc_arm_lpc11u35_stm32f407_mod

[GCC_ARM][LPC11U35][LPC1114][STMF407]: Modified build scripts
Merge remote-tracking branch 'upstream/master'