Include string.h for memset and memmove declaration


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375593 35697150-7ecd-e111-bb59-0022644237b5
Change libpng15.so to libpng.so in LIB_DEPENDS to prepare the upgrade


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375594 35697150-7ecd-e111-bb59-0022644237b5
Remove imlib1

It has become a patch spaghetti over the time and making it support newer version
of various graphics libraries will be a nightmare

It is time to say good bye to imlib1

With hat:	portmgr
Discussed with:	antoine
Approved by:	kwm


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375595 35697150-7ecd-e111-bb59-0022644237b5
Update to 2.4.7.

Sync some changes from the webkit-gtk3 port.
The 2.4.x series is the last webkitgtk version that will have WebKit1.


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375596 35697150-7ecd-e111-bb59-0022644237b5