chinese/fqterm: add <unistd.h>, fix -fpermissive on modern compilers
The source tarball has DOS line endings, but only one file was converted.
Two of the four patches were created with DOS line endings, so for
consistency sake, USE_DOS2UNIX was changed to "yes" and the DOS line
endings were removed from existing patches.
Approved by: portmgr (bapt, implicit)