Add "Printing file" and "Printing tail" debug-level log messages

In printfile() and printtail() which are used by menu() and many other
functions.

These should be helpful to sysops that just want to know what file is being
displayed under what conditions (e.g. for trouble-shooting or customization
reasons).

src/sbbs3/prntfile.cpp

@@ -88,6 +88,7 @@ bool sbbs_t::printfile(const char* fname, int mode, int org_cols, JSObject* obj)
 		return true;
 	}
 
+	lprintf(LOG_DEBUG, "Printing file: %s", fpath);
 	if(!(mode&P_NOCRLF) && row > 0 && !rip) {
 		newline();
 	}
@@ -197,15 +198,18 @@ bool sbbs_t::printtail(const char* fname, int lines, int mode, int org_cols, JSO
 		}
 		return false;
 	}
-	if(!(mode&P_NOCRLF) && row > 0) {
-		newline();
-	}
 	length=(int)filelength(file);
 	if(length<0) {
 		fclose(fp);
 		errormsg(WHERE,ERR_CHK,fpath,length);
 		return false;
 	}
+
+	lprintf(LOG_DEBUG, "Printing tail: %s", fpath);
+	if(!(mode&P_NOCRLF) && row > 0) {
+		newline();
+	}
+
 	if(length > lines * PRINTFILE_MAX_LINE_LEN) {
 		length = lines * PRINTFILE_MAX_LINE_LEN;
 		(void)fseek(fp, -length, SEEK_END);