Added some compiletime evaluation keywords to cython.

cython.nanorc

@@ -8,7 +8,7 @@ icolor brightred "cdef cppclass [ 0-9A-Z_]+\(.*?\):"
 
 
 # Python Keyword Color
-color green "\<(and|as|assert|class|def|del|elif|else|except|exec|finally|for|from|global|if|import|in|is|lambda|map|not|or|pass|print|raise|try|while|with|yield)\>"
+color green "\<(and|as|assert|class|def|DEF|del|elif|ELIF|else|ELSE|except|exec|finally|for|from|global|if|IF|import|in|is|lambda|map|not|or|pass|print|raise|try|while|with|yield)\>"
 color brightmagenta "\<(continue|break|return)\>"
 
 # Cython Keyword Color