Fixed isgraph() and ispunct() (macroes and library functions).
Merge pull request #3 from greg-king5/ctype

Fixed two <ctype.h> functions.
Added Travis CI config file.
Removed unused variable.
Removed unused variables.
Removed unused variable.
Placed libraries and the end of the linker cmdline.
Removed unused variable.
Removed unused variable.
Added reference to unused variable to avoid GCC 4.6 warning.