Fix of item 2 of issue 254

[brchiu]

Previous PR #273 can not be reopened, so I re-create a new one here after fix problem when dealing J2735's ASN file.

If the type of a field of information object set is imported from other module, then modify corresponding parameter to reflect the fact.

For the case stated in item 2 of #254, there are two RepeatRate defined in different modules, i.e.
TCICommonTypes.asn and IEEE-1609-3-WEE. So a suitable prefix using module name should be added to distinguish between them and two files, i.e. TCI-CommonTypes_RepeatRate.c and IEEE-1609-3-WEE_RepeatRate.c, are generated.

For module IEEE-1609-3-WSA, it import RepeatRate from module IEEE-1609-3-WEE. So

static const asn_ioc_cell_t asn_IOS_SrvAdvMsgHeaderTCI-CommonTypes_RepeatRate.h` and  `IEEE-1609-3-WEE_RepeatRate.c` are generated.ExtTypes_1_rows[] = {
	{ "&extRef", aioc__value, &asn_DEF_RefExt, &asn_VAL_1_c_RepeatRate },
	{ "&ExtValue", aioc__type, &asn_DEF_RepeatRate },
...
	{ "&ExtValue", aioc__type, &asn_DEF_AdvertiserIdentifier }
};

should be :

static const asn_ioc_cell_t asn_IOS_SrvAdvMsgHeaderTCI-CommonTypes_RepeatRate.h` and  `IEEE-1609-3-WEE_RepeatRate.c` are generated.ExtTypes_1_rows[] = {
	{ "&extRef", aioc__value, &asn_DEF_RefExt, &asn_VAL_1_c_RepeatRate },
	{ "&ExtValue", aioc__type, &asn_DEF_IEEE_1609_3_WEE_RepeatRate },
...
	{ "&ExtValue", aioc__type, &asn_DEF_AdvertiserIdentifier }
};

Starting from 3GPP release 11, there are also duplicate type names MobilityInformation defined in module S1AP-IEs and in module SonTransfer-IEs of 36.413 (S1AP) which suffer from this problem. There is error message when compiling with SonTransfer-IEs module along with other major S1AP modules.

ProtocolExtensionField.c:277:31: error: ‘asn_DEF_MobilityInformation’ undeclared here (not in a function); did you mean ‘S1AP_IEs_MobilityInformation_t’?
  { "&Extension", aioc__type, &asn_DEF_MobilityInformation },

Applying this pull request, the generated code become :

	{ "&Extension", aioc__type, &asn_DEF_S1AP_IEs_MobilityInformation },

thus solve S1AP's compilation problem.

[coveralls]

Coverage increased (+0.02%) to 71.138% when pulling f97fac4 on brchiu:fix_of_item_2_of_issue_254 into 4cc779f on vlm:master.