Introduce end-of-line normalization

Change-Id: If92ef2ceb5f1311d52c66710db9491d7ed4427c2
Reviewed-on: https://code.wireshark.org/review/116
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Pascal Quantin <pascal.quantin@gmail.com>
Pass the caplen from the struct wtap_pkthdr to pcap_read_post_process().

That makes it clearer what the argument should be and, in the case of an
SPB, passes the correct length (the length *after* any pseudo-header we
convert to a union wtap_pseudo_header and remove from the raw packet
data we hand to our caller).

Change-Id: I431738942b4dd10ee0951d549ebf8d12c941c439
Reviewed-on: https://code.wireshark.org/review/135
Reviewed-by: Guy Harris <guy@alum.mit.edu>
[Automatic manuf, services and enterprise-numbers update for 2014-02-09]

Change-Id: I914b0c5e7b427ac7201bcd4a062055036c802b5f
Reviewed-on: https://code.wireshark.org/review/154
Reviewed-by: Gerald Combs <gerald@wireshark.org>