Move TCL script files -- Step 1 of 2:

- Move src/target/{interface,target,board,test}/ into src/tcl/
- Remove existing rules in src/Makefile.am and src/target/Makefile.am.
- Add Makefile.am handling of *.cfg and *.tcl files in top Makefile.am:
  - Add dist-hook to include such files under src/tcl in the distribution.
  - Add install-data-hook to install contents of '$(top_srcdir)/src/tcl/'.
  - Add uninstall-hook to remove the installed script files.
- Change paths to (un)install script files in '$(pkgdatadir)/scripts'.

git-svn-id: svn://svn.berlios.de/openocd/trunk@1918 b42882b7-edfa-0310-969c-e2dbd0fdcd60