Araq/Nimrod — pull request #1260 by enurlyx (2014-06-10 20:41:51+00:00)
Title: c2nim -> Support for anonymous structs/unions

Adding support for anonymous structs/unions in c2nim + test file.

Following an example:

C source:
```c
struct normal{
int a;
int b;
};

typedef struct outerStruct {
struct normal a_nomal_one;

int a;

struct {
union {
int b;
} a_union_in_the_struct;

int c;
};

union {
int d;

struct {
int e;
} a_struct_in_the_union;
} a_union;
};
```

Resulting Nimrod:
```nimrod
type
normal* = object
a*: cint
b*: cint

INNER_C_UNION_1402431418_2* = object {.union.}
b*: cint

INNER_C_STRUCT_1402431418_1* = object
a_union_in_the_struct*: INNER_C_UNION_1402431418_2
c*: cint

INNER_C_STRUCT_1402431418_5* = object
e*: cint

INNER_C_UNION_1402431418_4* = object {.union.}
d*: cint
a_struct_in_the_union*: INNER_C_STRUCT_1402431418_5

outerStruct* = object
a_nomal_one*: normal
a*: cint
ano_3*: INNER_C_STRUCT_1402431418_1
a_union*: INNER_C_UNION_1402431418_4
```