Merge PR99 and its fixes to support parsing Information Object and Information Object Set

This is a collection of works :

1. Based on @zhanglei002's pull request 99.

2. A fix by @AuthenticEshkinKot and merged by @mouse07410 at
   commit 2c8d366bbe1fc4e4c041e9b0eb9779f8a42d754b of https://github.com/mouse07410/asn1c
   to support parsing of Information Object and Information Object Set

3. A fix by @Uri Blumenthal in asn1fix_derefv.c at :
   commit ec0ade4f87c807e763e3f35fc5466adb6dda3473 of https://github.com/mouse07410/asn1c
   to solve crash on asn1p_value_free().

4. My pull request 18 to @mouse07410's https://github.com/mouse07410/asn1c to solve
   problems found during parsing ASN.1 modules of S1AP, RANAP and J2735-201603.

5. My pull request 22 to @mouse07410's https://github.com/mouse07410/asn1c to solve issue 147
   and to solve the problem during parsing ASN.1 module of NBAP.

6. My pull request 23 to @mouse07410's https://github.com/mouse07410/asn1c to fix memory leakage
   introduced in aforementioned commits.
   Most code changes are the same as pull request 153 to this repository.

7. A fix of my bug in item 6 which result asn1c crash, fixed by @mouse07410.
diff --git a/libasn1parser/asn1p_ref.c b/libasn1parser/asn1p_ref.c
index 79e32aa..b5ed3dc 100644
--- a/libasn1parser/asn1p_ref.c
+++ b/libasn1parser/asn1p_ref.c
@@ -10,12 +10,13 @@
  * Construct a new empty reference.
  */
 asn1p_ref_t *
-asn1p_ref_new(int _lineno) {
+asn1p_ref_new(int _lineno, asn1p_module_t *mod) {
 	asn1p_ref_t *ref;
 
 	ref = calloc(1, sizeof *ref);
 	if(ref) {
 		ref->_lineno = _lineno;
+		ref->module = mod;
 	}
 
 	return ref;
@@ -118,7 +119,7 @@
 asn1p_ref_clone(asn1p_ref_t *ref) {
 	asn1p_ref_t *newref;
 
-	newref = asn1p_ref_new(ref->_lineno);
+	newref = asn1p_ref_new(ref->_lineno, ref->module);
 	if(newref) {
 		int i;
 		for(i = 0; i < ref->comp_count; i++) {