[PATCH v3 0/4] perf script python: add Python3 support

[Tony Jones]

This is v3 of my version of the patchset.  

The exporter and viewer changes were all in one patch for V2. 
For V3 I split them into 3 patches for the reasons below.

Patch#1 adds Python3 support to exported-sql-viewer 
Patch#2 adds Python3 support to export-to-postgresql
Patch#3 adds Python3 support to export-to-sqlite 
Patch#4 cleans up some repeated use of date functions in the code.

I added Adrian's signed-off-by to Patch#2 per the revised patch he sent 
in his review of V2.

The content of patches 1, 3 and 4 is unchanged from V2 but I'm including 
all the patches again to hopefully make your application easier. I added 
Adrian's Acked-by to Patch#4 per his review of that patch in V2.

Once these are applied I believe this is everything needed to run on a
system without Python2.

Thanks

Tony