tests/gpgscm: Verbatim import of latest TinySCHEME.

Revision 110 from svn://svn.code.sf.net/p/tinyscheme/code/trunk

• tests/gpgscm/COPYING: New file.
• tests/gpgscm/Manual.txt: Likewise.
• tests/gpgscm/init.scm: Likewise.
• tests/gpgscm/opdefines.h: Likewise.
• tests/gpgscm/scheme-private.h: Likewise.
• tests/gpgscm/scheme.c: Likewise.
• tests/gpgscm/scheme.h: Likewise.

• Signed-off-by: Justus Winter <justus@g10code.com>