Add GPL headers to board/chip configuration files, and dejagnu site file.

Small step towards marking all files as GPL.

ChangeLog:

	* config/arm/boards/stm32f0discovery/board.cfg: Add GPL header.
	* config/arm/boards/stm32vldiscovery/board.cfg: Likewise.
	* config/avr/chips/atmega328p/chip.cfg: Likewise.
	* config/arm/chips/stm32f051/chip.cfg: Likewise.
	* config/arm/chips/stm32f100/chip.cfg: Likewise.
	* dejagnu/site.exp.in: Likewise.
Fix GPL headers in test makefile fragments.

This patch adds GPL headers where they were missing, or fixes the
whitespace around existing headers if it was non-standard.  The
Makefile.in files were then regenerated.

ChangeLog:

	* analysis/Makefile.am, src/common.mk.am, src/*/Makefile.am: Add
	GPL header, or fix whitespace in existing header.
	* src/*/Makefile.in: Regenerate.