Python scripts: Version check IDA prior to using idaapii.require

[williballenthin]

Via Minh Triet Pham Tran

Hello, I think for the flare-ida scripts, you should have a check for the
version of IDA (>=6.5 or <=6.4) because idaapi.require is introduced from
IDA >6.4 as mentioned in this article:
http://www.hexblog.com/?p=749
The scripts including idaapi.require:
https://github.com/fireeye/flare-ida/blob/master/python/flare/annotate_IDB_MSDN.py
https://github.com/fireeye/flare-ida/blob/master/plugins/shellcode_hashes_search_plugin.py
https://github.com/fireeye/flare-ida/blob/master/plugins/stackstrings_plugin.py
https://github.com/fireeye/flare-ida/blob/master/plugins/apply_callee_type_plugin.py

[mr-tz]

Should we still worry about this in the days of > IDA 7?

[jhsmith]

We should focus on IDA 7.X going forward. Please tag/release the repo before breaking backwards compatibility to IDA 6.X so that we can direct users of older IDA to a working version.