Add cross-compilation script

runtime/syntax/vi.micro

@@ -0,0 +1,8 @@
+syntax "VI" "(^|/|\.)(ex|vim)rc$|\.vim"
+
+color identifier "[A-Za-z_][A-Za-z0-9_]*[[:space:]]*[()]"
+color statement  "\b([nvxsoilc]?(nore|un)?map|[nvlx]n|[ico]?no|[cilovx][um]|s?unm)\b"
+color statement  "\b(snor|nun|nm|set|if|endif|let|unlet)\b"
+color statement "[!&=]"
+color constant ""(\\.|[^"])*"|'(\\.|[^'])*'"
+color comment  "(^|[[:space:]])\"[^"]*$"