fix compile and tests error

I am pretty sure I did that before committing broken stuff…

Git-Dch: Ignore
do not load filesize in pkgAcqIndexTrans explicitly

The constructor is calling the baseclass pkgAcqIndex which does this
already – and also does it correctly for compressed files which would
overwise lead to the size of uncompressed files to be expected.

Git-Dch: Ignore
update symbols file

Git-Dch: Ignore
Change default of Acquire::AllowInsecureRepositories to "true"

This change is made for backward compatiblity and should be reverted
once jessie is out.
releasing package apt version 1.1~exp5