Add fragroute/IDS evasion support

[aturner]

It's hard to integrate fragroute(r) with tcpreplay, so we should add the functionality.

[aturner]

(In [1948]) remove argv_create() which is in fragroute. refs #42

[aturner]

(In [1949]) more fragroute clean up. need to figure out how to parse fragroute rules. refs #42

[aturner]

(In [1950]) link libfragroute to tcprewrite and parse args. refs #42

[aturner]

(In [1960]) sync up workspace to allow merge of 3.2.4 changes. refs #42

[aturner]

(In [1985]) minor doc change. refs #42

[aturner]

(In [1994]) basic func working. refs #42

[aturner]

(In [1995]) wow, it like works. refs #42

[aturner]

(In [1996]) tweak fragroute docs refs #42

[aturner]

(In [2000]) add svn props. refs #42

[aturner]

(In [2001]) fix compiling code when fragroute is disabled. refs #42

[aturner]

(In [2002]) update --version for fragroute refs #42

[aturner]

Was going to add tests, but even simple things like 'ip_frag 8 old' aren't 100% repeatable, so I'm calling it done.