Add missing files (header and .txt) for release.

Add missing files (header and .txt) for release.

make distcheck is used to make packages with OpenOCD release, this
command uses information from Makefile.am files to know which files
should be included in the package and which can be left only in
repository. This patch makes a few headers from recent JTAG drivers
and one txt file with info about target tcl config files included in
released packages.

Change-Id: I91202290633a30f53624a8c7d9a0ebf72c40772b
Signed-off-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-on: http://openocd.zylin.com/767
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>