convert main.cpp to utf-8

note: on hold

this converts main.cpp from iso charater encoding to utf-8. since the original author but a non-ascii string in the psztimestamp this is a little bit difficult.

the character he put in was an "em-dash" (a long hyphen), iso character 151 or 97 in hex

http://la.remifa.so/unicode/latin1.html
151	&#151;	&#x97;	—	—	unused	em dash

this PR just puts the hex-byte 0x97 directly in the string, which allows us save the file with utf-8 encoding. others should work as well