The system_stm32f0xx.c file is from 
STM32F0xx_StdPeriph_Lib_V1.5.0.zip, the folder:

	STM32F0xx_StdPeriph_Lib_V1.5.0/Libraries/CMSIS/Device/ST/STM32F0xx/Source/Templates
	
The vectors_stm32f0xx.c file was created to conform with  
the assembly files gcc_ride7/startup_stm32f0??.s.