deficiencies of vlm/#260).

by casting dec_value to unsigned (uintmax_t)

On i686 the long is 4 bytes and when converted to uint64_t some big
unsigned values get converted to very big negative values

See https://github.com/vlm/asn1c/issues/185#issuecomment-372546490

On i686 the long is 4 bytes and the right shift with more then 32 bits
is probably an undefined behaviour

See https://github.com/vlm/asn1c/issues/185#issuecomment-372546490

On i686 the long is 4 bytes and when converted to uint64_t some big
unsigned values get converted to very big negative values

See https://github.com/vlm/asn1c/issues/185#issuecomment-372546490

On i686 the long is 4 bytes and the right shift with more then 32 bits
is probably an undefined behaviour

See https://github.com/vlm/asn1c/issues/185#issuecomment-372546490

Instead in two bytes the ENB-UE-S1AP-ID was encoded in three
For value 2 the correct encoding is `02 00 02 00`
and not `03 00 02 00 00`

And the MME-UE-S1AP-ID were encoded in 5 instead of 4

Files are from #185 and were renamed to match the Makefile's glob
pattern

bin/1.bin -> nextepc/sample-S1AP-PDU-1.aper

Thanks to @acetcom

Previously when decoding fails the memory was reset with memset after
casting the specifics to asn_CHOICE_specifics_t in order to get the size

The problem is that the OPEN TYPE could contains a different type not
derived from asn_CHOICE that does not have a struct_size member with a
valid size.

This fixes test failures in examples/sample.source.S1AP

This makes debugging and testing a lot more easier as skeleton files are
not copied and you don't need to execute `make regen` after every change
in the skeleton files.

You need to manually remove all skeleton files and run
`make regen-makefile` the first time after checking out this commit

Rename the existing files to match the glob used in the Makefile

To execute the tests run `make check` or `make check-aper`

and regenerate the the S1AP Makefile

According to Rec. ITU-T X.691 (08/2015)

11.5.3 Let "range" be defined as the integer value ("ub" – "lb" + 1), and let the value to be encoded be "n".

See also https://github.com/vlm/asn1c/issues/185#issuecomment-368745830

According to Rec. ITU-T X.691 (08/2015)

11.5.3 Let "range" be defined as the integer value ("ub" – "lb" + 1), and let the value to be encoded be "n".

See also https://github.com/vlm/asn1c/issues/185#issuecomment-368745830

When generating code for multiple ASN.1 syntaxes that have clashing
names, we need to add a prefix in order to prevent clashes in the global
C symbol namespace.  Using the ASN1C_PREFIX environment variable and
this patch serves as a work-around to that.  All non-basic type names
as well as references to that type and source code + header file names
will be pre-fixed accordingly.

This is a re-implementation of this feature due to osmocom's
implementation version can not work on newest asn1c repository.

When generating code for multiple ASN.1 syntaxes that have clashing
names, we need to add a prefix in order to prevent clashes in the global
C symbol namespace.  Using the ASN1C_PREFIX environment variable and
this patch serves as a work-around to that.  All non-basic type names
as well as references to that type and source code + header file names
will be pre-fixed accordingly.

This is a re-implementation of this feature due to osmocom's
implementation version can not work on newest asn1c repository.

This commit addresses compatibility of PR #234 with #226 (addition of APER support)