CMake: update path to install python bindings

Python libs should be installed in "lib/python2.7" instead of
"lib/python2.7.x".

InputFile: add parameter to seek with a specific flag

Fix mikrosimage#211

Up to v0.5.6

Up to v0.5.5

Merge pull request mikrosimage#142 from cchampet/hotfix_getFormatsAnd…

…CodecsName

Hotfix: get formats and codecs name

CMake: add prefix 'AVTRANSCODER' to some flags

AudioTransform: fix AVPacket buffer resize

Only change number of samples if variable (i.e: MOV...).

Up to v0.5.1

Up to v0.5.0

Up to v0.4.3