Replace some Windows dash/hyphen character with a "-" in some comments.

Replace some Windows dash/hyphen character with a "-" in some comments.

Make the header files declare the "value_string" arrays as "extern", so
as to prevent problems on some platforms when building a shared
libethereal.

Note that, at least currently, we have separate "PER_NOT_DECODED_YET()"
and "BER_NOT_DECODED_YET()" macros, rather than a common
"NOT_DECODED_YET()" macro.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@10996 f5534014-38df-0310-8fa8-9805f1628bb7