Squashed previous commits and dropped package.xml

Added install rule for package.xml

remove automatic include_directories

fix the template for pkgconfig

make sure the docs build

one more pkgconfig fix

install opencv2.pc

2.4.4
Revert "Squashed previous commits and dropped package.xml"

This reverts commit c1d9773a4fc9dcdf6fa457fb0d996d80508933bc.
Squashed previous commits and dropped package.xml

Added install rule for package.xml

remove automatic include_directories

fix the template for pkgconfig

make sure the docs build

one more pkgconfig fix

install opencv2.pc

2.4.4
Rebase from 'upstream'