[nrf51822][gcc_arm][c++]: fix 'impossible constraint in asm' error, used by ble app
[nrf51822][gcc_arm]: fix softdevice path and srec_cat params of makefile templates
Merge pull request #468 from xiongyihui/dev

[nrf51822][gcc_arm]: fix makefile templates and nrf_svc.h's 'impossible constraint in asm' error