tools:regression: Add mkallbranches
tools:regression: Add mkallbranches

Script that generates reports for current branch (master) and all open
pull requests.

Still some rough edges.

Signed-off-by: Ola Jeppsson <793f970c52ded1276b9264c742f19d1888cbaf73@adapteva.com>

mateunho/pal,mateunho/pal,8l/pal,debug-de-su-ka/pal,parallella/pal,debug-de-su-ka/pal,eliteraspberries/pal,olajep/pal,eliteraspberries/pal,mateunho/pal,debug-de-su-ka/pal,debug-de-su-ka/pal,olajep/pal,8l/pal,Adamszk/pal3,mateunho/pal,8l/pal,olajep/pal,aolofsson/pal,aolofsson/pal,Adamszk/pal3,eliteraspberries/pal,parallella/pal,Adamszk/pal3,8l/pal,parallella/pal,parallella/pal,aolofsson/pal,debug-de-su-ka/pal,eliteraspberries/pal,mateunho/pal,parallella/pal,aolofsson/pal,olajep/pal,Adamszk/pal3,eliteraspberries/pal