Merge pull request #245 from bgamari/master

ioreg: Add raw() function to Getter
`native` has been removed
stm32l1 - added a dummy app for BlueNRG
stm32l1 - implemented BlueNRG SPI protocol
stm32l1 - bluenrg formatting fixes as advised by @farcaller
stm32l1 - refactored SPI enums and error codes
Merge pull request #246 from tamird/fix-build

`native` has been removed
Updated target specs and cleaned up compile flags
Merge pull request #248 from farcaller/target-specs

Updated target specs and cleaned up compile flags
stm32l1 - minor formatting fixes to match the guidelines
Merge pull request #244 from kvark/spi

BlueNRG driver and demo app (based on STM32L1)
ty_path in AstBuilder - accepts only one argument
Fix in lcd hd44780 driver - RFC 248
fix ty_path in PT - only one argument
Enum namespaces fix in PT for lpc17xx and k20 app blink
lpc17xx uart PT enum namespaces fix
k20 - ISR app enum namespace fix
PT tests corrections
Fix stm platforms - enum namspaces
Merge pull request #251 from 0xc0170/fix_nightly

Fix nightly fallout